Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

15 files changed, 0 insertions, 5171 deletions

diff --git a/ANDROID_3.4.5/fs/fscache/Kconfig b/ANDROID_3.4.5/fs/fscache/Kconfig
deleted file mode 100644
index 3f6dfa98..00000000
--- a/ANDROID_3.4.5/fs/fscache/Kconfig
+++ /dev/null
@@ -1,61 +0,0 @@
-
-config FSCACHE
-	tristate "General filesystem local caching manager"
-	help
-	  This option enables a generic filesystem caching manager that can be
-	  used by various network and other filesystems to cache data locally.
-	  Different sorts of caches can be plugged in, depending on the
-	  resources available.
-
-	  See Documentation/filesystems/caching/fscache.txt for more information.
-
-config FSCACHE_STATS
-	bool "Gather statistical information on local caching"
-	depends on FSCACHE && PROC_FS
-	help
-	  This option causes statistical information to be gathered on local
-	  caching and exported through file:
-
-		/proc/fs/fscache/stats
-
-	  The gathering of statistics adds a certain amount of overhead to
-	  execution as there are a quite a few stats gathered, and on a
-	  multi-CPU system these may be on cachelines that keep bouncing
-	  between CPUs.  On the other hand, the stats are very useful for
-	  debugging purposes.  Saying 'Y' here is recommended.
-
-	  See Documentation/filesystems/caching/fscache.txt for more information.
-
-config FSCACHE_HISTOGRAM
-	bool "Gather latency information on local caching"
-	depends on FSCACHE && PROC_FS
-	help
-	  This option causes latency information to be gathered on local
-	  caching and exported through file:
-
-		/proc/fs/fscache/histogram
-
-	  The generation of this histogram adds a certain amount of overhead to
-	  execution as there are a number of points at which data is gathered,
-	  and on a multi-CPU system these may be on cachelines that keep
-	  bouncing between CPUs.  On the other hand, the histogram may be
-	  useful for debugging purposes.  Saying 'N' here is recommended.
-
-	  See Documentation/filesystems/caching/fscache.txt for more information.
-
-config FSCACHE_DEBUG
-	bool "Debug FS-Cache"
-	depends on FSCACHE
-	help
-	  This permits debugging to be dynamically enabled in the local caching
-	  management module.  If this is set, the debugging output may be
-	  enabled by setting bits in /sys/modules/fscache/parameter/debug.
-
-	  See Documentation/filesystems/caching/fscache.txt for more information.
-
-config FSCACHE_OBJECT_LIST
-	bool "Maintain global object list for debugging purposes"
-	depends on FSCACHE && PROC_FS
-	help
-	  Maintain a global list of active fscache objects that can be
-	  retrieved through /proc/fs/fscache/objects for debugging purposes
diff --git a/ANDROID_3.4.5/fs/fscache/Makefile b/ANDROID_3.4.5/fs/fscache/Makefile
deleted file mode 100644
index 6d561531..00000000
--- a/ANDROID_3.4.5/fs/fscache/Makefile
+++ /dev/null
@@ -1,20 +0,0 @@
-#
-# Makefile for general filesystem caching code
-#
-
-fscache-y := \
-	cache.o \
-	cookie.o \
-	fsdef.o \
-	main.o \
-	netfs.o \
-	object.o \
-	operation.o \
-	page.o
-
-fscache-$(CONFIG_PROC_FS) += proc.o
-fscache-$(CONFIG_FSCACHE_STATS) += stats.o
-fscache-$(CONFIG_FSCACHE_HISTOGRAM) += histogram.o
-fscache-$(CONFIG_FSCACHE_OBJECT_LIST) += object-list.o
-
-obj-$(CONFIG_FSCACHE) := fscache.o
diff --git a/ANDROID_3.4.5/fs/fscache/cache.c b/ANDROID_3.4.5/fs/fscache/cache.c
deleted file mode 100644
index 6a3c48ab..00000000
--- a/ANDROID_3.4.5/fs/fscache/cache.c
+++ /dev/null
@@ -1,420 +0,0 @@
-/* FS-Cache cache handling
- *
- * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#define FSCACHE_DEBUG_LEVEL CACHE
-#include <linux/module.h>
-#include <linux/slab.h>
-#include "internal.h"
-
-LIST_HEAD(fscache_cache_list);
-DECLARE_RWSEM(fscache_addremove_sem);
-DECLARE_WAIT_QUEUE_HEAD(fscache_cache_cleared_wq);
-EXPORT_SYMBOL(fscache_cache_cleared_wq);
-
-static LIST_HEAD(fscache_cache_tag_list);
-
-/*
- * look up a cache tag
- */
-struct fscache_cache_tag *__fscache_lookup_cache_tag(const char *name)
-{
-	struct fscache_cache_tag *tag, *xtag;
-
-	/* firstly check for the existence of the tag under read lock */
-	down_read(&fscache_addremove_sem);
-
-	list_for_each_entry(tag, &fscache_cache_tag_list, link) {
-		if (strcmp(tag->name, name) == 0) {
-			atomic_inc(&tag->usage);
-			up_read(&fscache_addremove_sem);
-			return tag;
-		}
-	}
-
-	up_read(&fscache_addremove_sem);
-
-	/* the tag does not exist - create a candidate */
-	xtag = kzalloc(sizeof(*xtag) + strlen(name) + 1, GFP_KERNEL);
-	if (!xtag)
-		/* return a dummy tag if out of memory */
-		return ERR_PTR(-ENOMEM);
-
-	atomic_set(&xtag->usage, 1);
-	strcpy(xtag->name, name);
-
-	/* write lock, search again and add if still not present */
-	down_write(&fscache_addremove_sem);
-
-	list_for_each_entry(tag, &fscache_cache_tag_list, link) {
-		if (strcmp(tag->name, name) == 0) {
-			atomic_inc(&tag->usage);
-			up_write(&fscache_addremove_sem);
-			kfree(xtag);
-			return tag;
-		}
-	}
-
-	list_add_tail(&xtag->link, &fscache_cache_tag_list);
-	up_write(&fscache_addremove_sem);
-	return xtag;
-}
-
-/*
- * release a reference to a cache tag
- */
-void __fscache_release_cache_tag(struct fscache_cache_tag *tag)
-{
-	if (tag != ERR_PTR(-ENOMEM)) {
-		down_write(&fscache_addremove_sem);
-
-		if (atomic_dec_and_test(&tag->usage))
-			list_del_init(&tag->link);
-		else
-			tag = NULL;
-
-		up_write(&fscache_addremove_sem);
-
-		kfree(tag);
-	}
-}
-
-/*
- * select a cache in which to store an object
- * - the cache addremove semaphore must be at least read-locked by the caller
- * - the object will never be an index
- */
-struct fscache_cache *fscache_select_cache_for_object(
-	struct fscache_cookie *cookie)
-{
-	struct fscache_cache_tag *tag;
-	struct fscache_object *object;
-	struct fscache_cache *cache;
-
-	_enter("");
-
-	if (list_empty(&fscache_cache_list)) {
-		_leave(" = NULL [no cache]");
-		return NULL;
-	}
-
-	/* we check the parent to determine the cache to use */
-	spin_lock(&cookie->lock);
-
-	/* the first in the parent's backing list should be the preferred
-	 * cache */
-	if (!hlist_empty(&cookie->backing_objects)) {
-		object = hlist_entry(cookie->backing_objects.first,
-				     struct fscache_object, cookie_link);
-
-		cache = object->cache;
-		if (object->state >= FSCACHE_OBJECT_DYING ||
-		    test_bit(FSCACHE_IOERROR, &cache->flags))
-			cache = NULL;
-
-		spin_unlock(&cookie->lock);
-		_leave(" = %p [parent]", cache);
-		return cache;
-	}
-
-	/* the parent is unbacked */
-	if (cookie->def->type != FSCACHE_COOKIE_TYPE_INDEX) {
-		/* cookie not an index and is unbacked */
-		spin_unlock(&cookie->lock);
-		_leave(" = NULL [cookie ub,ni]");
-		return NULL;
-	}
-
-	spin_unlock(&cookie->lock);
-
-	if (!cookie->def->select_cache)
-		goto no_preference;
-
-	/* ask the netfs for its preference */
-	tag = cookie->def->select_cache(cookie->parent->netfs_data,
-					cookie->netfs_data);
-	if (!tag)
-		goto no_preference;
-
-	if (tag == ERR_PTR(-ENOMEM)) {
-		_leave(" = NULL [nomem tag]");
-		return NULL;
-	}
-
-	if (!tag->cache) {
-		_leave(" = NULL [unbacked tag]");
-		return NULL;
-	}
-
-	if (test_bit(FSCACHE_IOERROR, &tag->cache->flags))
-		return NULL;
-
-	_leave(" = %p [specific]", tag->cache);
-	return tag->cache;
-
-no_preference:
-	/* netfs has no preference - just select first cache */
-	cache = list_entry(fscache_cache_list.next,
-			   struct fscache_cache, link);
-	_leave(" = %p [first]", cache);
-	return cache;
-}
-
-/**
- * fscache_init_cache - Initialise a cache record
- * @cache: The cache record to be initialised
- * @ops: The cache operations to be installed in that record
- * @idfmt: Format string to define identifier
- * @...: sprintf-style arguments
- *
- * Initialise a record of a cache and fill in the name.
- *
- * See Documentation/filesystems/caching/backend-api.txt for a complete
- * description.
- */
-void fscache_init_cache(struct fscache_cache *cache,
-			const struct fscache_cache_ops *ops,
-			const char *idfmt,
-			...)
-{
-	va_list va;
-
-	memset(cache, 0, sizeof(*cache));
-
-	cache->ops = ops;
-
-	va_start(va, idfmt);
-	vsnprintf(cache->identifier, sizeof(cache->identifier), idfmt, va);
-	va_end(va);
-
-	INIT_WORK(&cache->op_gc, fscache_operation_gc);
-	INIT_LIST_HEAD(&cache->link);
-	INIT_LIST_HEAD(&cache->object_list);
-	INIT_LIST_HEAD(&cache->op_gc_list);
-	spin_lock_init(&cache->object_list_lock);
-	spin_lock_init(&cache->op_gc_list_lock);
-}
-EXPORT_SYMBOL(fscache_init_cache);
-
-/**
- * fscache_add_cache - Declare a cache as being open for business
- * @cache: The record describing the cache
- * @ifsdef: The record of the cache object describing the top-level index
- * @tagname: The tag describing this cache
- *
- * Add a cache to the system, making it available for netfs's to use.
- *
- * See Documentation/filesystems/caching/backend-api.txt for a complete
- * description.
- */
-int fscache_add_cache(struct fscache_cache *cache,
-		      struct fscache_object *ifsdef,
-		      const char *tagname)
-{
-	struct fscache_cache_tag *tag;
-
-	BUG_ON(!cache->ops);
-	BUG_ON(!ifsdef);
-
-	cache->flags = 0;
-	ifsdef->event_mask = ULONG_MAX & ~(1 << FSCACHE_OBJECT_EV_CLEARED);
-	ifsdef->state = FSCACHE_OBJECT_ACTIVE;
-
-	if (!tagname)
-		tagname = cache->identifier;
-
-	BUG_ON(!tagname[0]);
-
-	_enter("{%s.%s},,%s", cache->ops->name, cache->identifier, tagname);
-
-	/* we use the cache tag to uniquely identify caches */
-	tag = __fscache_lookup_cache_tag(tagname);
-	if (IS_ERR(tag))
-		goto nomem;
-
-	if (test_and_set_bit(FSCACHE_TAG_RESERVED, &tag->flags))
-		goto tag_in_use;
-
-	cache->kobj = kobject_create_and_add(tagname, fscache_root);
-	if (!cache->kobj)
-		goto error;
-
-	ifsdef->cookie = &fscache_fsdef_index;
-	ifsdef->cache = cache;
-	cache->fsdef = ifsdef;
-
-	down_write(&fscache_addremove_sem);
-
-	tag->cache = cache;
-	cache->tag = tag;
-
-	/* add the cache to the list */
-	list_add(&cache->link, &fscache_cache_list);
-
-	/* add the cache's netfs definition index object to the cache's
-	 * list */
-	spin_lock(&cache->object_list_lock);
-	list_add_tail(&ifsdef->cache_link, &cache->object_list);
-	spin_unlock(&cache->object_list_lock);
-	fscache_objlist_add(ifsdef);
-
-	/* add the cache's netfs definition index object to the top level index
-	 * cookie as a known backing object */
-	spin_lock(&fscache_fsdef_index.lock);
-
-	hlist_add_head(&ifsdef->cookie_link,
-		       &fscache_fsdef_index.backing_objects);
-
-	atomic_inc(&fscache_fsdef_index.usage);
-
-	/* done */
-	spin_unlock(&fscache_fsdef_index.lock);
-	up_write(&fscache_addremove_sem);
-
-	printk(KERN_NOTICE "FS-Cache: Cache \"%s\" added (type %s)\n",
-	       cache->tag->name, cache->ops->name);
-	kobject_uevent(cache->kobj, KOBJ_ADD);
-
-	_leave(" = 0 [%s]", cache->identifier);
-	return 0;
-
-tag_in_use:
-	printk(KERN_ERR "FS-Cache: Cache tag '%s' already in use\n", tagname);
-	__fscache_release_cache_tag(tag);
-	_leave(" = -EXIST");
-	return -EEXIST;
-
-error:
-	__fscache_release_cache_tag(tag);
-	_leave(" = -EINVAL");
-	return -EINVAL;
-
-nomem:
-	_leave(" = -ENOMEM");
-	return -ENOMEM;
-}
-EXPORT_SYMBOL(fscache_add_cache);
-
-/**
- * fscache_io_error - Note a cache I/O error
- * @cache: The record describing the cache
- *
- * Note that an I/O error occurred in a cache and that it should no longer be
- * used for anything.  This also reports the error into the kernel log.
- *
- * See Documentation/filesystems/caching/backend-api.txt for a complete
- * description.
- */
-void fscache_io_error(struct fscache_cache *cache)
-{
-	set_bit(FSCACHE_IOERROR, &cache->flags);
-
-	printk(KERN_ERR "FS-Cache: Cache %s stopped due to I/O error\n",
-	       cache->ops->name);
-}
-EXPORT_SYMBOL(fscache_io_error);
-
-/*
- * request withdrawal of all the objects in a cache
- * - all the objects being withdrawn are moved onto the supplied list
- */
-static void fscache_withdraw_all_objects(struct fscache_cache *cache,
-					 struct list_head *dying_objects)
-{
-	struct fscache_object *object;
-
-	spin_lock(&cache->object_list_lock);
-
-	while (!list_empty(&cache->object_list)) {
-		object = list_entry(cache->object_list.next,
-				    struct fscache_object, cache_link);
-		list_move_tail(&object->cache_link, dying_objects);
-
-		_debug("withdraw %p", object->cookie);
-
-		spin_lock(&object->lock);
-		spin_unlock(&cache->object_list_lock);
-		fscache_raise_event(object, FSCACHE_OBJECT_EV_WITHDRAW);
-		spin_unlock(&object->lock);
-
-		cond_resched();
-		spin_lock(&cache->object_list_lock);
-	}
-
-	spin_unlock(&cache->object_list_lock);
-}
-
-/**
- * fscache_withdraw_cache - Withdraw a cache from the active service
- * @cache: The record describing the cache
- *
- * Withdraw a cache from service, unbinding all its cache objects from the
- * netfs cookies they're currently representing.
- *
- * See Documentation/filesystems/caching/backend-api.txt for a complete
- * description.
- */
-void fscache_withdraw_cache(struct fscache_cache *cache)
-{
-	LIST_HEAD(dying_objects);
-
-	_enter("");
-
-	printk(KERN_NOTICE "FS-Cache: Withdrawing cache \"%s\"\n",
-	       cache->tag->name);
-
-	/* make the cache unavailable for cookie acquisition */
-	if (test_and_set_bit(FSCACHE_CACHE_WITHDRAWN, &cache->flags))
-		BUG();
-
-	down_write(&fscache_addremove_sem);
-	list_del_init(&cache->link);
-	cache->tag->cache = NULL;
-	up_write(&fscache_addremove_sem);
-
-	/* make sure all pages pinned by operations on behalf of the netfs are
-	 * written to disk */
-	fscache_stat(&fscache_n_cop_sync_cache);
-	cache->ops->sync_cache(cache);
-	fscache_stat_d(&fscache_n_cop_sync_cache);
-
-	/* dissociate all the netfs pages backed by this cache from the block
-	 * mappings in the cache */
-	fscache_stat(&fscache_n_cop_dissociate_pages);
-	cache->ops->dissociate_pages(cache);
-	fscache_stat_d(&fscache_n_cop_dissociate_pages);
-
-	/* we now have to destroy all the active objects pertaining to this
-	 * cache - which we do by passing them off to thread pool to be
-	 * disposed of */
-	_debug("destroy");
-
-	fscache_withdraw_all_objects(cache, &dying_objects);
-
-	/* wait for all extant objects to finish their outstanding operations
-	 * and go away */
-	_debug("wait for finish");
-	wait_event(fscache_cache_cleared_wq,
-		   atomic_read(&cache->object_count) == 0);
-	_debug("wait for clearance");
-	wait_event(fscache_cache_cleared_wq,
-		   list_empty(&cache->object_list));
-	_debug("cleared");
-	ASSERT(list_empty(&dying_objects));
-
-	kobject_put(cache->kobj);
-
-	clear_bit(FSCACHE_TAG_RESERVED, &cache->tag->flags);
-	fscache_release_cache_tag(cache->tag);
-	cache->tag = NULL;
-
-	_leave("");
-}
-EXPORT_SYMBOL(fscache_withdraw_cache);
diff --git a/ANDROID_3.4.5/fs/fscache/cookie.c b/ANDROID_3.4.5/fs/fscache/cookie.c
deleted file mode 100644
index 99053507..00000000
--- a/ANDROID_3.4.5/fs/fscache/cookie.c
+++ /dev/null
@@ -1,514 +0,0 @@
-/* netfs cookie management
- *
- * Copyright (C) 2004-2007 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * See Documentation/filesystems/caching/netfs-api.txt for more information on
- * the netfs API.
- */
-
-#define FSCACHE_DEBUG_LEVEL COOKIE
-#include <linux/module.h>
-#include <linux/slab.h>
-#include "internal.h"
-
-struct kmem_cache *fscache_cookie_jar;
-
-static atomic_t fscache_object_debug_id = ATOMIC_INIT(0);
-
-static int fscache_acquire_non_index_cookie(struct fscache_cookie *cookie);
-static int fscache_alloc_object(struct fscache_cache *cache,
-				struct fscache_cookie *cookie);
-static int fscache_attach_object(struct fscache_cookie *cookie,
-				 struct fscache_object *object);
-
-/*
- * initialise an cookie jar slab element prior to any use
- */
-void fscache_cookie_init_once(void *_cookie)
-{
-	struct fscache_cookie *cookie = _cookie;
-
-	memset(cookie, 0, sizeof(*cookie));
-	spin_lock_init(&cookie->lock);
-	spin_lock_init(&cookie->stores_lock);
-	INIT_HLIST_HEAD(&cookie->backing_objects);
-}
-
-/*
- * request a cookie to represent an object (index, datafile, xattr, etc)
- * - parent specifies the parent object
- *   - the top level index cookie for each netfs is stored in the fscache_netfs
- *     struct upon registration
- * - def points to the definition
- * - the netfs_data will be passed to the functions pointed to in *def
- * - all attached caches will be searched to see if they contain this object
- * - index objects aren't stored on disk until there's a dependent file that
- *   needs storing
- * - other objects are stored in a selected cache immediately, and all the
- *   indices forming the path to it are instantiated if necessary
- * - we never let on to the netfs about errors
- *   - we may set a negative cookie pointer, but that's okay
- */
-struct fscache_cookie *__fscache_acquire_cookie(
-	struct fscache_cookie *parent,
-	const struct fscache_cookie_def *def,
-	void *netfs_data)
-{
-	struct fscache_cookie *cookie;
-
-	BUG_ON(!def);
-
-	_enter("{%s},{%s},%p",
-	       parent ? (char *) parent->def->name : "<no-parent>",
-	       def->name, netfs_data);
-
-	fscache_stat(&fscache_n_acquires);
-
-	/* if there's no parent cookie, then we don't create one here either */
-	if (!parent) {
-		fscache_stat(&fscache_n_acquires_null);
-		_leave(" [no parent]");
-		return NULL;
-	}
-
-	/* validate the definition */
-	BUG_ON(!def->get_key);
-	BUG_ON(!def->name[0]);
-
-	BUG_ON(def->type == FSCACHE_COOKIE_TYPE_INDEX &&
-	       parent->def->type != FSCACHE_COOKIE_TYPE_INDEX);
-
-	/* allocate and initialise a cookie */
-	cookie = kmem_cache_alloc(fscache_cookie_jar, GFP_KERNEL);
-	if (!cookie) {
-		fscache_stat(&fscache_n_acquires_oom);
-		_leave(" [ENOMEM]");
-		return NULL;
-	}
-
-	atomic_set(&cookie->usage, 1);
-	atomic_set(&cookie->n_children, 0);
-
-	atomic_inc(&parent->usage);
-	atomic_inc(&parent->n_children);
-
-	cookie->def		= def;
-	cookie->parent		= parent;
-	cookie->netfs_data	= netfs_data;
-	cookie->flags		= 0;
-
-	/* radix tree insertion won't use the preallocation pool unless it's
-	 * told it may not wait */
-	INIT_RADIX_TREE(&cookie->stores, GFP_NOFS & ~__GFP_WAIT);
-
-	switch (cookie->def->type) {
-	case FSCACHE_COOKIE_TYPE_INDEX:
-		fscache_stat(&fscache_n_cookie_index);
-		break;
-	case FSCACHE_COOKIE_TYPE_DATAFILE:
-		fscache_stat(&fscache_n_cookie_data);
-		break;
-	default:
-		fscache_stat(&fscache_n_cookie_special);
-		break;
-	}
-
-	/* if the object is an index then we need do nothing more here - we
-	 * create indices on disk when we need them as an index may exist in
-	 * multiple caches */
-	if (cookie->def->type != FSCACHE_COOKIE_TYPE_INDEX) {
-		if (fscache_acquire_non_index_cookie(cookie) < 0) {
-			atomic_dec(&parent->n_children);
-			__fscache_cookie_put(cookie);
-			fscache_stat(&fscache_n_acquires_nobufs);
-			_leave(" = NULL");
-			return NULL;
-		}
-	}
-
-	fscache_stat(&fscache_n_acquires_ok);
-	_leave(" = %p", cookie);
-	return cookie;
-}
-EXPORT_SYMBOL(__fscache_acquire_cookie);
-
-/*
- * acquire a non-index cookie
- * - this must make sure the index chain is instantiated and instantiate the
- *   object representation too
- */
-static int fscache_acquire_non_index_cookie(struct fscache_cookie *cookie)
-{
-	struct fscache_object *object;
-	struct fscache_cache *cache;
-	uint64_t i_size;
-	int ret;
-
-	_enter("");
-
-	cookie->flags = 1 << FSCACHE_COOKIE_UNAVAILABLE;
-
-	/* now we need to see whether the backing objects for this cookie yet
-	 * exist, if not there'll be nothing to search */
-	down_read(&fscache_addremove_sem);
-
-	if (list_empty(&fscache_cache_list)) {
-		up_read(&fscache_addremove_sem);
-		_leave(" = 0 [no caches]");
-		return 0;
-	}
-
-	/* select a cache in which to store the object */
-	cache = fscache_select_cache_for_object(cookie->parent);
-	if (!cache) {
-		up_read(&fscache_addremove_sem);
-		fscache_stat(&fscache_n_acquires_no_cache);
-		_leave(" = -ENOMEDIUM [no cache]");
-		return -ENOMEDIUM;
-	}
-
-	_debug("cache %s", cache->tag->name);
-
-	cookie->flags =
-		(1 << FSCACHE_COOKIE_LOOKING_UP) |
-		(1 << FSCACHE_COOKIE_CREATING) |
-		(1 << FSCACHE_COOKIE_NO_DATA_YET);
-
-	/* ask the cache to allocate objects for this cookie and its parent
-	 * chain */
-	ret = fscache_alloc_object(cache, cookie);
-	if (ret < 0) {
-		up_read(&fscache_addremove_sem);
-		_leave(" = %d", ret);
-		return ret;
-	}
-
-	/* pass on how big the object we're caching is supposed to be */
-	cookie->def->get_attr(cookie->netfs_data, &i_size);
-
-	spin_lock(&cookie->lock);
-	if (hlist_empty(&cookie->backing_objects)) {
-		spin_unlock(&cookie->lock);
-		goto unavailable;
-	}
-
-	object = hlist_entry(cookie->backing_objects.first,
-			     struct fscache_object, cookie_link);
-
-	fscache_set_store_limit(object, i_size);
-
-	/* initiate the process of looking up all the objects in the chain
-	 * (done by fscache_initialise_object()) */
-	fscache_enqueue_object(object);
-
-	spin_unlock(&cookie->lock);
-
-	/* we may be required to wait for lookup to complete at this point */
-	if (!fscache_defer_lookup) {
-		_debug("non-deferred lookup %p", &cookie->flags);
-		wait_on_bit(&cookie->flags, FSCACHE_COOKIE_LOOKING_UP,
-			    fscache_wait_bit, TASK_UNINTERRUPTIBLE);
-		_debug("complete");
-		if (test_bit(FSCACHE_COOKIE_UNAVAILABLE, &cookie->flags))
-			goto unavailable;
-	}
-
-	up_read(&fscache_addremove_sem);
-	_leave(" = 0 [deferred]");
-	return 0;
-
-unavailable:
-	up_read(&fscache_addremove_sem);
-	_leave(" = -ENOBUFS");
-	return -ENOBUFS;
-}
-
-/*
- * recursively allocate cache object records for a cookie/cache combination
- * - caller must be holding the addremove sem
- */
-static int fscache_alloc_object(struct fscache_cache *cache,
-				struct fscache_cookie *cookie)
-{
-	struct fscache_object *object;
-	struct hlist_node *_n;
-	int ret;
-
-	_enter("%p,%p{%s}", cache, cookie, cookie->def->name);
-
-	spin_lock(&cookie->lock);
-	hlist_for_each_entry(object, _n, &cookie->backing_objects,
-			     cookie_link) {
-		if (object->cache == cache)
-			goto object_already_extant;
-	}
-	spin_unlock(&cookie->lock);
-
-	/* ask the cache to allocate an object (we may end up with duplicate
-	 * objects at this stage, but we sort that out later) */
-	fscache_stat(&fscache_n_cop_alloc_object);
-	object = cache->ops->alloc_object(cache, cookie);
-	fscache_stat_d(&fscache_n_cop_alloc_object);
-	if (IS_ERR(object)) {
-		fscache_stat(&fscache_n_object_no_alloc);
-		ret = PTR_ERR(object);
-		goto error;
-	}
-
-	fscache_stat(&fscache_n_object_alloc);
-
-	object->debug_id = atomic_inc_return(&fscache_object_debug_id);
-
-	_debug("ALLOC OBJ%x: %s {%lx}",
-	       object->debug_id, cookie->def->name, object->events);
-
-	ret = fscache_alloc_object(cache, cookie->parent);
-	if (ret < 0)
-		goto error_put;
-
-	/* only attach if we managed to allocate all we needed, otherwise
-	 * discard the object we just allocated and instead use the one
-	 * attached to the cookie */
-	if (fscache_attach_object(cookie, object) < 0) {
-		fscache_stat(&fscache_n_cop_put_object);
-		cache->ops->put_object(object);
-		fscache_stat_d(&fscache_n_cop_put_object);
-	}
-
-	_leave(" = 0");
-	return 0;
-
-object_already_extant:
-	ret = -ENOBUFS;
-	if (object->state >= FSCACHE_OBJECT_DYING) {
-		spin_unlock(&cookie->lock);
-		goto error;
-	}
-	spin_unlock(&cookie->lock);
-	_leave(" = 0 [found]");
-	return 0;
-
-error_put:
-	fscache_stat(&fscache_n_cop_put_object);
-	cache->ops->put_object(object);
-	fscache_stat_d(&fscache_n_cop_put_object);
-error:
-	_leave(" = %d", ret);
-	return ret;
-}
-
-/*
- * attach a cache object to a cookie
- */
-static int fscache_attach_object(struct fscache_cookie *cookie,
-				 struct fscache_object *object)
-{
-	struct fscache_object *p;
-	struct fscache_cache *cache = object->cache;
-	struct hlist_node *_n;
-	int ret;
-
-	_enter("{%s},{OBJ%x}", cookie->def->name, object->debug_id);
-
-	spin_lock(&cookie->lock);
-
-	/* there may be multiple initial creations of this object, but we only
-	 * want one */
-	ret = -EEXIST;
-	hlist_for_each_entry(p, _n, &cookie->backing_objects, cookie_link) {
-		if (p->cache == object->cache) {
-			if (p->state >= FSCACHE_OBJECT_DYING)
-				ret = -ENOBUFS;
-			goto cant_attach_object;
-		}
-	}
-
-	/* pin the parent object */
-	spin_lock_nested(&cookie->parent->lock, 1);
-	hlist_for_each_entry(p, _n, &cookie->parent->backing_objects,
-			     cookie_link) {
-		if (p->cache == object->cache) {
-			if (p->state >= FSCACHE_OBJECT_DYING) {
-				ret = -ENOBUFS;
-				spin_unlock(&cookie->parent->lock);
-				goto cant_attach_object;
-			}
-			object->parent = p;
-			spin_lock(&p->lock);
-			p->n_children++;
-			spin_unlock(&p->lock);
-			break;
-		}
-	}
-	spin_unlock(&cookie->parent->lock);
-
-	/* attach to the cache's object list */
-	if (list_empty(&object->cache_link)) {
-		spin_lock(&cache->object_list_lock);
-		list_add(&object->cache_link, &cache->object_list);
-		spin_unlock(&cache->object_list_lock);
-	}
-
-	/* attach to the cookie */
-	object->cookie = cookie;
-	atomic_inc(&cookie->usage);
-	hlist_add_head(&object->cookie_link, &cookie->backing_objects);
-
-	fscache_objlist_add(object);
-	ret = 0;
-
-cant_attach_object:
-	spin_unlock(&cookie->lock);
-	_leave(" = %d", ret);
-	return ret;
-}
-
-/*
- * update the index entries backing a cookie
- */
-void __fscache_update_cookie(struct fscache_cookie *cookie)
-{
-	struct fscache_object *object;
-	struct hlist_node *_p;
-
-	fscache_stat(&fscache_n_updates);
-
-	if (!cookie) {
-		fscache_stat(&fscache_n_updates_null);
-		_leave(" [no cookie]");
-		return;
-	}
-
-	_enter("{%s}", cookie->def->name);
-
-	BUG_ON(!cookie->def->get_aux);
-
-	spin_lock(&cookie->lock);
-
-	/* update the index entry on disk in each cache backing this cookie */
-	hlist_for_each_entry(object, _p,
-			     &cookie->backing_objects, cookie_link) {
-		fscache_raise_event(object, FSCACHE_OBJECT_EV_UPDATE);
-	}
-
-	spin_unlock(&cookie->lock);
-	_leave("");
-}
-EXPORT_SYMBOL(__fscache_update_cookie);
-
-/*
- * release a cookie back to the cache
- * - the object will be marked as recyclable on disk if retire is true
- * - all dependents of this cookie must have already been unregistered
- *   (indices/files/pages)
- */
-void __fscache_relinquish_cookie(struct fscache_cookie *cookie, int retire)
-{
-	struct fscache_cache *cache;
-	struct fscache_object *object;
-	unsigned long event;
-
-	fscache_stat(&fscache_n_relinquishes);
-	if (retire)
-		fscache_stat(&fscache_n_relinquishes_retire);
-
-	if (!cookie) {
-		fscache_stat(&fscache_n_relinquishes_null);
-		_leave(" [no cookie]");
-		return;
-	}
-
-	_enter("%p{%s,%p},%d",
-	       cookie, cookie->def->name, cookie->netfs_data, retire);
-
-	if (atomic_read(&cookie->n_children) != 0) {
-		printk(KERN_ERR "FS-Cache: Cookie '%s' still has children\n",
-		       cookie->def->name);
-		BUG();
-	}
-
-	/* wait for the cookie to finish being instantiated (or to fail) */
-	if (test_bit(FSCACHE_COOKIE_CREATING, &cookie->flags)) {
-		fscache_stat(&fscache_n_relinquishes_waitcrt);
-		wait_on_bit(&cookie->flags, FSCACHE_COOKIE_CREATING,
-			    fscache_wait_bit, TASK_UNINTERRUPTIBLE);
-	}
-
-	event = retire ? FSCACHE_OBJECT_EV_RETIRE : FSCACHE_OBJECT_EV_RELEASE;
-
-	spin_lock(&cookie->lock);
-
-	/* break links with all the active objects */
-	while (!hlist_empty(&cookie->backing_objects)) {
-		object = hlist_entry(cookie->backing_objects.first,
-				     struct fscache_object,
-				     cookie_link);
-
-		_debug("RELEASE OBJ%x", object->debug_id);
-
-		/* detach each cache object from the object cookie */
-		spin_lock(&object->lock);
-		hlist_del_init(&object->cookie_link);
-
-		cache = object->cache;
-		object->cookie = NULL;
-		fscache_raise_event(object, event);
-		spin_unlock(&object->lock);
-
-		if (atomic_dec_and_test(&cookie->usage))
-			/* the cookie refcount shouldn't be reduced to 0 yet */
-			BUG();
-	}
-
-	/* detach pointers back to the netfs */
-	cookie->netfs_data	= NULL;
-	cookie->def		= NULL;
-
-	spin_unlock(&cookie->lock);
-
-	if (cookie->parent) {
-		ASSERTCMP(atomic_read(&cookie->parent->usage), >, 0);
-		ASSERTCMP(atomic_read(&cookie->parent->n_children), >, 0);
-		atomic_dec(&cookie->parent->n_children);
-	}
-
-	/* finally dispose of the cookie */
-	ASSERTCMP(atomic_read(&cookie->usage), >, 0);
-	fscache_cookie_put(cookie);
-
-	_leave("");
-}
-EXPORT_SYMBOL(__fscache_relinquish_cookie);
-
-/*
- * destroy a cookie
- */
-void __fscache_cookie_put(struct fscache_cookie *cookie)
-{
-	struct fscache_cookie *parent;
-
-	_enter("%p", cookie);
-
-	for (;;) {
-		_debug("FREE COOKIE %p", cookie);
-		parent = cookie->parent;
-		BUG_ON(!hlist_empty(&cookie->backing_objects));
-		kmem_cache_free(fscache_cookie_jar, cookie);
-
-		if (!parent)
-			break;
-
-		cookie = parent;
-		BUG_ON(atomic_read(&cookie->usage) <= 0);
-		if (!atomic_dec_and_test(&cookie->usage))
-			break;
-	}
-
-	_leave("");
-}
diff --git a/ANDROID_3.4.5/fs/fscache/fsdef.c b/ANDROID_3.4.5/fs/fscache/fsdef.c
deleted file mode 100644
index f5b4baee..00000000
--- a/ANDROID_3.4.5/fs/fscache/fsdef.c
+++ /dev/null
@@ -1,144 +0,0 @@
-/* Filesystem index definition
- *
- * Copyright (C) 2004-2007 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#define FSCACHE_DEBUG_LEVEL CACHE
-#include <linux/module.h>
-#include "internal.h"
-
-static uint16_t fscache_fsdef_netfs_get_key(const void *cookie_netfs_data,
-					    void *buffer, uint16_t bufmax);
-
-static uint16_t fscache_fsdef_netfs_get_aux(const void *cookie_netfs_data,
-					    void *buffer, uint16_t bufmax);
-
-static
-enum fscache_checkaux fscache_fsdef_netfs_check_aux(void *cookie_netfs_data,
-						    const void *data,
-						    uint16_t datalen);
-
-/*
- * The root index is owned by FS-Cache itself.
- *
- * When a netfs requests caching facilities, FS-Cache will, if one doesn't
- * already exist, create an entry in the root index with the key being the name
- * of the netfs ("AFS" for example), and the auxiliary data holding the index
- * structure version supplied by the netfs:
- *
- *				     FSDEF
- *				       |
- *				 +-----------+
- *				 |           |
- *				NFS         AFS
- *			       [v=1]       [v=1]
- *
- * If an entry with the appropriate name does already exist, the version is
- * compared.  If the version is different, the entire subtree from that entry
- * will be discarded and a new entry created.
- *
- * The new entry will be an index, and a cookie referring to it will be passed
- * to the netfs.  This is then the root handle by which the netfs accesses the
- * cache.  It can create whatever objects it likes in that index, including
- * further indices.
- */
-static struct fscache_cookie_def fscache_fsdef_index_def = {
-	.name		= ".FS-Cache",
-	.type		= FSCACHE_COOKIE_TYPE_INDEX,
-};
-
-struct fscache_cookie fscache_fsdef_index = {
-	.usage		= ATOMIC_INIT(1),
-	.lock		= __SPIN_LOCK_UNLOCKED(fscache_fsdef_index.lock),
-	.backing_objects = HLIST_HEAD_INIT,
-	.def		= &fscache_fsdef_index_def,
-};
-EXPORT_SYMBOL(fscache_fsdef_index);
-
-/*
- * Definition of an entry in the root index.  Each entry is an index, keyed to
- * a specific netfs and only applicable to a particular version of the index
- * structure used by that netfs.
- */
-struct fscache_cookie_def fscache_fsdef_netfs_def = {
-	.name		= "FSDEF.netfs",
-	.type		= FSCACHE_COOKIE_TYPE_INDEX,
-	.get_key	= fscache_fsdef_netfs_get_key,
-	.get_aux	= fscache_fsdef_netfs_get_aux,
-	.check_aux	= fscache_fsdef_netfs_check_aux,
-};
-
-/*
- * get the key data for an FSDEF index record - this is the name of the netfs
- * for which this entry is created
- */
-static uint16_t fscache_fsdef_netfs_get_key(const void *cookie_netfs_data,
-					    void *buffer, uint16_t bufmax)
-{
-	const struct fscache_netfs *netfs = cookie_netfs_data;
-	unsigned klen;
-
-	_enter("{%s.%u},", netfs->name, netfs->version);
-
-	klen = strlen(netfs->name);
-	if (klen > bufmax)
-		return 0;
-
-	memcpy(buffer, netfs->name, klen);
-	return klen;
-}
-
-/*
- * get the auxiliary data for an FSDEF index record - this is the index
- * structure version number of the netfs for which this version is created
- */
-static uint16_t fscache_fsdef_netfs_get_aux(const void *cookie_netfs_data,
-					    void *buffer, uint16_t bufmax)
-{
-	const struct fscache_netfs *netfs = cookie_netfs_data;
-	unsigned dlen;
-
-	_enter("{%s.%u},", netfs->name, netfs->version);
-
-	dlen = sizeof(uint32_t);
-	if (dlen > bufmax)
-		return 0;
-
-	memcpy(buffer, &netfs->version, dlen);
-	return dlen;
-}
-
-/*
- * check that the index structure version number stored in the auxiliary data
- * matches the one the netfs gave us
- */
-static enum fscache_checkaux fscache_fsdef_netfs_check_aux(
-	void *cookie_netfs_data,
-	const void *data,
-	uint16_t datalen)
-{
-	struct fscache_netfs *netfs = cookie_netfs_data;
-	uint32_t version;
-
-	_enter("{%s},,%hu", netfs->name, datalen);
-
-	if (datalen != sizeof(version)) {
-		_leave(" = OBSOLETE [dl=%d v=%zu]", datalen, sizeof(version));
-		return FSCACHE_CHECKAUX_OBSOLETE;
-	}
-
-	memcpy(&version, data, sizeof(version));
-	if (version != netfs->version) {
-		_leave(" = OBSOLETE [ver=%x net=%x]", version, netfs->version);
-		return FSCACHE_CHECKAUX_OBSOLETE;
-	}
-
-	_leave(" = OKAY");
-	return FSCACHE_CHECKAUX_OKAY;
-}
diff --git a/ANDROID_3.4.5/fs/fscache/histogram.c b/ANDROID_3.4.5/fs/fscache/histogram.c
deleted file mode 100644
index bad49674..00000000
--- a/ANDROID_3.4.5/fs/fscache/histogram.c
+++ /dev/null
@@ -1,109 +0,0 @@
-/* FS-Cache latency histogram
- *
- * Copyright (C) 2008 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
- */
-
-#define FSCACHE_DEBUG_LEVEL THREAD
-#include <linux/module.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include "internal.h"
-
-atomic_t fscache_obj_instantiate_histogram[HZ];
-atomic_t fscache_objs_histogram[HZ];
-atomic_t fscache_ops_histogram[HZ];
-atomic_t fscache_retrieval_delay_histogram[HZ];
-atomic_t fscache_retrieval_histogram[HZ];
-
-/*
- * display the time-taken histogram
- */
-static int fscache_histogram_show(struct seq_file *m, void *v)
-{
-	unsigned long index;
-	unsigned n[5], t;
-
-	switch ((unsigned long) v) {
-	case 1:
-		seq_puts(m, "JIFS  SECS  OBJ INST  OP RUNS   OBJ RUNS "
-			 " RETRV DLY RETRIEVLS\n");
-		return 0;
-	case 2:
-		seq_puts(m, "===== ===== ========= ========= ========="
-			 " ========= =========\n");
-		return 0;
-	default:
-		index = (unsigned long) v - 3;
-		n[0] = atomic_read(&fscache_obj_instantiate_histogram[index]);
-		n[1] = atomic_read(&fscache_ops_histogram[index]);
-		n[2] = atomic_read(&fscache_objs_histogram[index]);
-		n[3] = atomic_read(&fscache_retrieval_delay_histogram[index]);
-		n[4] = atomic_read(&fscache_retrieval_histogram[index]);
-		if (!(n[0] | n[1] | n[2] | n[3] | n[4]))
-			return 0;
-
-		t = (index * 1000) / HZ;
-
-		seq_printf(m, "%4lu  0.%03u %9u %9u %9u %9u %9u\n",
-			   index, t, n[0], n[1], n[2], n[3], n[4]);
-		return 0;
-	}
-}
-
-/*
- * set up the iterator to start reading from the first line
- */
-static void *fscache_histogram_start(struct seq_file *m, loff_t *_pos)
-{
-	if ((unsigned long long)*_pos >= HZ + 2)
-		return NULL;
-	if (*_pos == 0)
-		*_pos = 1;
-	return (void *)(unsigned long) *_pos;
-}
-
-/*
- * move to the next line
- */
-static void *fscache_histogram_next(struct seq_file *m, void *v, loff_t *pos)
-{
-	(*pos)++;
-	return (unsigned long long)*pos > HZ + 2 ?
-		NULL : (void *)(unsigned long) *pos;
-}
-
-/*
- * clean up after reading
- */
-static void fscache_histogram_stop(struct seq_file *m, void *v)
-{
-}
-
-static const struct seq_operations fscache_histogram_ops = {
-	.start		= fscache_histogram_start,
-	.stop		= fscache_histogram_stop,
-	.next		= fscache_histogram_next,
-	.show		= fscache_histogram_show,
-};
-
-/*
- * open "/proc/fs/fscache/histogram" to provide latency data
- */
-static int fscache_histogram_open(struct inode *inode, struct file *file)
-{
-	return seq_open(file, &fscache_histogram_ops);
-}
-
-const struct file_operations fscache_histogram_fops = {
-	.owner		= THIS_MODULE,
-	.open		= fscache_histogram_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= seq_release,
-};
diff --git a/ANDROID_3.4.5/fs/fscache/internal.h b/ANDROID_3.4.5/fs/fscache/internal.h
deleted file mode 100644
index f6aad48d..00000000
--- a/ANDROID_3.4.5/fs/fscache/internal.h
+++ /dev/null
@@ -1,438 +0,0 @@
-/* Internal definitions for FS-Cache
- *
- * Copyright (C) 2004-2007 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-/*
- * Lock order, in the order in which multiple locks should be obtained:
- * - fscache_addremove_sem
- * - cookie->lock
- * - cookie->parent->lock
- * - cache->object_list_lock
- * - object->lock
- * - object->parent->lock
- * - cookie->stores_lock
- * - fscache_thread_lock
- *
- */
-
-#include <linux/fscache-cache.h>
-#include <linux/sched.h>
-
-#define FSCACHE_MIN_THREADS	4
-#define FSCACHE_MAX_THREADS	32
-
-/*
- * cache.c
- */
-extern struct list_head fscache_cache_list;
-extern struct rw_semaphore fscache_addremove_sem;
-
-extern struct fscache_cache *fscache_select_cache_for_object(
-	struct fscache_cookie *);
-
-/*
- * cookie.c
- */
-extern struct kmem_cache *fscache_cookie_jar;
-
-extern void fscache_cookie_init_once(void *);
-extern void __fscache_cookie_put(struct fscache_cookie *);
-
-/*
- * fsdef.c
- */
-extern struct fscache_cookie fscache_fsdef_index;
-extern struct fscache_cookie_def fscache_fsdef_netfs_def;
-
-/*
- * histogram.c
- */
-#ifdef CONFIG_FSCACHE_HISTOGRAM
-extern atomic_t fscache_obj_instantiate_histogram[HZ];
-extern atomic_t fscache_objs_histogram[HZ];
-extern atomic_t fscache_ops_histogram[HZ];
-extern atomic_t fscache_retrieval_delay_histogram[HZ];
-extern atomic_t fscache_retrieval_histogram[HZ];
-
-static inline void fscache_hist(atomic_t histogram[], unsigned long start_jif)
-{
-	unsigned long jif = jiffies - start_jif;
-	if (jif >= HZ)
-		jif = HZ - 1;
-	atomic_inc(&histogram[jif]);
-}
-
-extern const struct file_operations fscache_histogram_fops;
-
-#else
-#define fscache_hist(hist, start_jif) do {} while (0)
-#endif
-
-/*
- * main.c
- */
-extern unsigned fscache_defer_lookup;
-extern unsigned fscache_defer_create;
-extern unsigned fscache_debug;
-extern struct kobject *fscache_root;
-extern struct workqueue_struct *fscache_object_wq;
-extern struct workqueue_struct *fscache_op_wq;
-DECLARE_PER_CPU(wait_queue_head_t, fscache_object_cong_wait);
-
-static inline bool fscache_object_congested(void)
-{
-	return workqueue_congested(WORK_CPU_UNBOUND, fscache_object_wq);
-}
-
-extern int fscache_wait_bit(void *);
-extern int fscache_wait_bit_interruptible(void *);
-
-/*
- * object.c
- */
-extern const char fscache_object_states_short[FSCACHE_OBJECT__NSTATES][5];
-
-extern void fscache_withdrawing_object(struct fscache_cache *,
-				       struct fscache_object *);
-extern void fscache_enqueue_object(struct fscache_object *);
-
-/*
- * object-list.c
- */
-#ifdef CONFIG_FSCACHE_OBJECT_LIST
-extern const struct file_operations fscache_objlist_fops;
-
-extern void fscache_objlist_add(struct fscache_object *);
-#else
-#define fscache_objlist_add(object) do {} while(0)
-#endif
-
-/*
- * operation.c
- */
-extern int fscache_submit_exclusive_op(struct fscache_object *,
-				       struct fscache_operation *);
-extern int fscache_submit_op(struct fscache_object *,
-			     struct fscache_operation *);
-extern int fscache_cancel_op(struct fscache_operation *);
-extern void fscache_abort_object(struct fscache_object *);
-extern void fscache_start_operations(struct fscache_object *);
-extern void fscache_operation_gc(struct work_struct *);
-
-/*
- * proc.c
- */
-#ifdef CONFIG_PROC_FS
-extern int __init fscache_proc_init(void);
-extern void fscache_proc_cleanup(void);
-#else
-#define fscache_proc_init()	(0)
-#define fscache_proc_cleanup()	do {} while (0)
-#endif
-
-/*
- * stats.c
- */
-#ifdef CONFIG_FSCACHE_STATS
-extern atomic_t fscache_n_ops_processed[FSCACHE_MAX_THREADS];
-extern atomic_t fscache_n_objs_processed[FSCACHE_MAX_THREADS];
-
-extern atomic_t fscache_n_op_pend;
-extern atomic_t fscache_n_op_run;
-extern atomic_t fscache_n_op_enqueue;
-extern atomic_t fscache_n_op_deferred_release;
-extern atomic_t fscache_n_op_release;
-extern atomic_t fscache_n_op_gc;
-extern atomic_t fscache_n_op_cancelled;
-extern atomic_t fscache_n_op_rejected;
-
-extern atomic_t fscache_n_attr_changed;
-extern atomic_t fscache_n_attr_changed_ok;
-extern atomic_t fscache_n_attr_changed_nobufs;
-extern atomic_t fscache_n_attr_changed_nomem;
-extern atomic_t fscache_n_attr_changed_calls;
-
-extern atomic_t fscache_n_allocs;
-extern atomic_t fscache_n_allocs_ok;
-extern atomic_t fscache_n_allocs_wait;
-extern atomic_t fscache_n_allocs_nobufs;
-extern atomic_t fscache_n_allocs_intr;
-extern atomic_t fscache_n_allocs_object_dead;
-extern atomic_t fscache_n_alloc_ops;
-extern atomic_t fscache_n_alloc_op_waits;
-
-extern atomic_t fscache_n_retrievals;
-extern atomic_t fscache_n_retrievals_ok;
-extern atomic_t fscache_n_retrievals_wait;
-extern atomic_t fscache_n_retrievals_nodata;
-extern atomic_t fscache_n_retrievals_nobufs;
-extern atomic_t fscache_n_retrievals_intr;
-extern atomic_t fscache_n_retrievals_nomem;
-extern atomic_t fscache_n_retrievals_object_dead;
-extern atomic_t fscache_n_retrieval_ops;
-extern atomic_t fscache_n_retrieval_op_waits;
-
-extern atomic_t fscache_n_stores;
-extern atomic_t fscache_n_stores_ok;
-extern atomic_t fscache_n_stores_again;
-extern atomic_t fscache_n_stores_nobufs;
-extern atomic_t fscache_n_stores_oom;
-extern atomic_t fscache_n_store_ops;
-extern atomic_t fscache_n_store_calls;
-extern atomic_t fscache_n_store_pages;
-extern atomic_t fscache_n_store_radix_deletes;
-extern atomic_t fscache_n_store_pages_over_limit;
-
-extern atomic_t fscache_n_store_vmscan_not_storing;
-extern atomic_t fscache_n_store_vmscan_gone;
-extern atomic_t fscache_n_store_vmscan_busy;
-extern atomic_t fscache_n_store_vmscan_cancelled;
-
-extern atomic_t fscache_n_marks;
-extern atomic_t fscache_n_uncaches;
-
-extern atomic_t fscache_n_acquires;
-extern atomic_t fscache_n_acquires_null;
-extern atomic_t fscache_n_acquires_no_cache;
-extern atomic_t fscache_n_acquires_ok;
-extern atomic_t fscache_n_acquires_nobufs;
-extern atomic_t fscache_n_acquires_oom;
-
-extern atomic_t fscache_n_updates;
-extern atomic_t fscache_n_updates_null;
-extern atomic_t fscache_n_updates_run;
-
-extern atomic_t fscache_n_relinquishes;
-extern atomic_t fscache_n_relinquishes_null;
-extern atomic_t fscache_n_relinquishes_waitcrt;
-extern atomic_t fscache_n_relinquishes_retire;
-
-extern atomic_t fscache_n_cookie_index;
-extern atomic_t fscache_n_cookie_data;
-extern atomic_t fscache_n_cookie_special;
-
-extern atomic_t fscache_n_object_alloc;
-extern atomic_t fscache_n_object_no_alloc;
-extern atomic_t fscache_n_object_lookups;
-extern atomic_t fscache_n_object_lookups_negative;
-extern atomic_t fscache_n_object_lookups_positive;
-extern atomic_t fscache_n_object_lookups_timed_out;
-extern atomic_t fscache_n_object_created;
-extern atomic_t fscache_n_object_avail;
-extern atomic_t fscache_n_object_dead;
-
-extern atomic_t fscache_n_checkaux_none;
-extern atomic_t fscache_n_checkaux_okay;
-extern atomic_t fscache_n_checkaux_update;
-extern atomic_t fscache_n_checkaux_obsolete;
-
-extern atomic_t fscache_n_cop_alloc_object;
-extern atomic_t fscache_n_cop_lookup_object;
-extern atomic_t fscache_n_cop_lookup_complete;
-extern atomic_t fscache_n_cop_grab_object;
-extern atomic_t fscache_n_cop_update_object;
-extern atomic_t fscache_n_cop_drop_object;
-extern atomic_t fscache_n_cop_put_object;
-extern atomic_t fscache_n_cop_sync_cache;
-extern atomic_t fscache_n_cop_attr_changed;
-extern atomic_t fscache_n_cop_read_or_alloc_page;
-extern atomic_t fscache_n_cop_read_or_alloc_pages;
-extern atomic_t fscache_n_cop_allocate_page;
-extern atomic_t fscache_n_cop_allocate_pages;
-extern atomic_t fscache_n_cop_write_page;
-extern atomic_t fscache_n_cop_uncache_page;
-extern atomic_t fscache_n_cop_dissociate_pages;
-
-static inline void fscache_stat(atomic_t *stat)
-{
-	atomic_inc(stat);
-}
-
-static inline void fscache_stat_d(atomic_t *stat)
-{
-	atomic_dec(stat);
-}
-
-#define __fscache_stat(stat) (stat)
-
-extern const struct file_operations fscache_stats_fops;
-#else
-
-#define __fscache_stat(stat) (NULL)
-#define fscache_stat(stat) do {} while (0)
-#define fscache_stat_d(stat) do {} while (0)
-#endif
-
-/*
- * raise an event on an object
- * - if the event is not masked for that object, then the object is
- *   queued for attention by the thread pool.
- */
-static inline void fscache_raise_event(struct fscache_object *object,
-				       unsigned event)
-{
-	if (!test_and_set_bit(event, &object->events) &&
-	    test_bit(event, &object->event_mask))
-		fscache_enqueue_object(object);
-}
-
-/*
- * drop a reference to a cookie
- */
-static inline void fscache_cookie_put(struct fscache_cookie *cookie)
-{
-	BUG_ON(atomic_read(&cookie->usage) <= 0);
-	if (atomic_dec_and_test(&cookie->usage))
-		__fscache_cookie_put(cookie);
-}
-
-/*
- * get an extra reference to a netfs retrieval context
- */
-static inline
-void *fscache_get_context(struct fscache_cookie *cookie, void *context)
-{
-	if (cookie->def->get_context)
-		cookie->def->get_context(cookie->netfs_data, context);
-	return context;
-}
-
-/*
- * release a reference to a netfs retrieval context
- */
-static inline
-void fscache_put_context(struct fscache_cookie *cookie, void *context)
-{
-	if (cookie->def->put_context)
-		cookie->def->put_context(cookie->netfs_data, context);
-}
-
-/*****************************************************************************/
-/*
- * debug tracing
- */
-#define dbgprintk(FMT, ...) \
-	printk(KERN_DEBUG "[%-6.6s] "FMT"\n", current->comm, ##__VA_ARGS__)
-
-#define kenter(FMT, ...) dbgprintk("==> %s("FMT")", __func__, ##__VA_ARGS__)
-#define kleave(FMT, ...) dbgprintk("<== %s()"FMT"", __func__, ##__VA_ARGS__)
-#define kdebug(FMT, ...) dbgprintk(FMT, ##__VA_ARGS__)
-
-#define kjournal(FMT, ...) no_printk(FMT, ##__VA_ARGS__)
-
-#ifdef __KDEBUG
-#define _enter(FMT, ...) kenter(FMT, ##__VA_ARGS__)
-#define _leave(FMT, ...) kleave(FMT, ##__VA_ARGS__)
-#define _debug(FMT, ...) kdebug(FMT, ##__VA_ARGS__)
-
-#elif defined(CONFIG_FSCACHE_DEBUG)
-#define _enter(FMT, ...)			\
-do {						\
-	if (__do_kdebug(ENTER))			\
-		kenter(FMT, ##__VA_ARGS__);	\
-} while (0)
-
-#define _leave(FMT, ...)			\
-do {						\
-	if (__do_kdebug(LEAVE))			\
-		kleave(FMT, ##__VA_ARGS__);	\
-} while (0)
-
-#define _debug(FMT, ...)			\
-do {						\
-	if (__do_kdebug(DEBUG))			\
-		kdebug(FMT, ##__VA_ARGS__);	\
-} while (0)
-
-#else
-#define _enter(FMT, ...) no_printk("==> %s("FMT")", __func__, ##__VA_ARGS__)
-#define _leave(FMT, ...) no_printk("<== %s()"FMT"", __func__, ##__VA_ARGS__)
-#define _debug(FMT, ...) no_printk(FMT, ##__VA_ARGS__)
-#endif
-
-/*
- * determine whether a particular optional debugging point should be logged
- * - we need to go through three steps to persuade cpp to correctly join the
- *   shorthand in FSCACHE_DEBUG_LEVEL with its prefix
- */
-#define ____do_kdebug(LEVEL, POINT) \
-	unlikely((fscache_debug & \
-		  (FSCACHE_POINT_##POINT << (FSCACHE_DEBUG_ ## LEVEL * 3))))
-#define ___do_kdebug(LEVEL, POINT) \
-	____do_kdebug(LEVEL, POINT)
-#define __do_kdebug(POINT) \
-	___do_kdebug(FSCACHE_DEBUG_LEVEL, POINT)
-
-#define FSCACHE_DEBUG_CACHE	0
-#define FSCACHE_DEBUG_COOKIE	1
-#define FSCACHE_DEBUG_PAGE	2
-#define FSCACHE_DEBUG_OPERATION	3
-
-#define FSCACHE_POINT_ENTER	1
-#define FSCACHE_POINT_LEAVE	2
-#define FSCACHE_POINT_DEBUG	4
-
-#ifndef FSCACHE_DEBUG_LEVEL
-#define FSCACHE_DEBUG_LEVEL CACHE
-#endif
-
-/*
- * assertions
- */
-#if 1 /* defined(__KDEBUGALL) */
-
-#define ASSERT(X)							\
-do {									\
-	if (unlikely(!(X))) {						\
-		printk(KERN_ERR "\n");					\
-		printk(KERN_ERR "FS-Cache: Assertion failed\n");	\
-		BUG();							\
-	}								\
-} while (0)
-
-#define ASSERTCMP(X, OP, Y)						\
-do {									\
-	if (unlikely(!((X) OP (Y)))) {					\
-		printk(KERN_ERR "\n");					\
-		printk(KERN_ERR "FS-Cache: Assertion failed\n");	\
-		printk(KERN_ERR "%lx " #OP " %lx is false\n",		\
-		       (unsigned long)(X), (unsigned long)(Y));		\
-		BUG();							\
-	}								\
-} while (0)
-
-#define ASSERTIF(C, X)							\
-do {									\
-	if (unlikely((C) && !(X))) {					\
-		printk(KERN_ERR "\n");					\
-		printk(KERN_ERR "FS-Cache: Assertion failed\n");	\
-		BUG();							\
-	}								\
-} while (0)
-
-#define ASSERTIFCMP(C, X, OP, Y)					\
-do {									\
-	if (unlikely((C) && !((X) OP (Y)))) {				\
-		printk(KERN_ERR "\n");					\
-		printk(KERN_ERR "FS-Cache: Assertion failed\n");	\
-		printk(KERN_ERR "%lx " #OP " %lx is false\n",		\
-		       (unsigned long)(X), (unsigned long)(Y));		\
-		BUG();							\
-	}								\
-} while (0)
-
-#else
-
-#define ASSERT(X)			do {} while (0)
-#define ASSERTCMP(X, OP, Y)		do {} while (0)
-#define ASSERTIF(C, X)			do {} while (0)
-#define ASSERTIFCMP(C, X, OP, Y)	do {} while (0)
-
-#endif /* assert or not */
diff --git a/ANDROID_3.4.5/fs/fscache/main.c b/ANDROID_3.4.5/fs/fscache/main.c
deleted file mode 100644
index f9d85677..00000000
--- a/ANDROID_3.4.5/fs/fscache/main.c
+++ /dev/null
@@ -1,218 +0,0 @@
-/* General filesystem local caching manager
- *
- * Copyright (C) 2004-2007 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#define FSCACHE_DEBUG_LEVEL CACHE
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/completion.h>
-#include <linux/slab.h>
-#include <linux/seq_file.h>
-#include "internal.h"
-
-MODULE_DESCRIPTION("FS Cache Manager");
-MODULE_AUTHOR("Red Hat, Inc.");
-MODULE_LICENSE("GPL");
-
-unsigned fscache_defer_lookup = 1;
-module_param_named(defer_lookup, fscache_defer_lookup, uint,
-		   S_IWUSR | S_IRUGO);
-MODULE_PARM_DESC(fscache_defer_lookup,
-		 "Defer cookie lookup to background thread");
-
-unsigned fscache_defer_create = 1;
-module_param_named(defer_create, fscache_defer_create, uint,
-		   S_IWUSR | S_IRUGO);
-MODULE_PARM_DESC(fscache_defer_create,
-		 "Defer cookie creation to background thread");
-
-unsigned fscache_debug;
-module_param_named(debug, fscache_debug, uint,
-		   S_IWUSR | S_IRUGO);
-MODULE_PARM_DESC(fscache_debug,
-		 "FS-Cache debugging mask");
-
-struct kobject *fscache_root;
-struct workqueue_struct *fscache_object_wq;
-struct workqueue_struct *fscache_op_wq;
-
-DEFINE_PER_CPU(wait_queue_head_t, fscache_object_cong_wait);
-
-/* these values serve as lower bounds, will be adjusted in fscache_init() */
-static unsigned fscache_object_max_active = 4;
-static unsigned fscache_op_max_active = 2;
-
-#ifdef CONFIG_SYSCTL
-static struct ctl_table_header *fscache_sysctl_header;
-
-static int fscache_max_active_sysctl(struct ctl_table *table, int write,
-				     void __user *buffer,
-				     size_t *lenp, loff_t *ppos)
-{
-	struct workqueue_struct **wqp = table->extra1;
-	unsigned int *datap = table->data;
-	int ret;
-
-	ret = proc_dointvec(table, write, buffer, lenp, ppos);
-	if (ret == 0)
-		workqueue_set_max_active(*wqp, *datap);
-	return ret;
-}
-
-ctl_table fscache_sysctls[] = {
-	{
-		.procname	= "object_max_active",
-		.data		= &fscache_object_max_active,
-		.maxlen		= sizeof(unsigned),
-		.mode		= 0644,
-		.proc_handler	= fscache_max_active_sysctl,
-		.extra1		= &fscache_object_wq,
-	},
-	{
-		.procname	= "operation_max_active",
-		.data		= &fscache_op_max_active,
-		.maxlen		= sizeof(unsigned),
-		.mode		= 0644,
-		.proc_handler	= fscache_max_active_sysctl,
-		.extra1		= &fscache_op_wq,
-	},
-	{}
-};
-
-ctl_table fscache_sysctls_root[] = {
-	{
-		.procname	= "fscache",
-		.mode		= 0555,
-		.child		= fscache_sysctls,
-	},
-	{}
-};
-#endif
-
-/*
- * initialise the fs caching module
- */
-static int __init fscache_init(void)
-{
-	unsigned int nr_cpus = num_possible_cpus();
-	unsigned int cpu;
-	int ret;
-
-	fscache_object_max_active =
-		clamp_val(nr_cpus,
-			  fscache_object_max_active, WQ_UNBOUND_MAX_ACTIVE);
-
-	ret = -ENOMEM;
-	fscache_object_wq = alloc_workqueue("fscache_object", WQ_UNBOUND,
-					    fscache_object_max_active);
-	if (!fscache_object_wq)
-		goto error_object_wq;
-
-	fscache_op_max_active =
-		clamp_val(fscache_object_max_active / 2,
-			  fscache_op_max_active, WQ_UNBOUND_MAX_ACTIVE);
-
-	ret = -ENOMEM;
-	fscache_op_wq = alloc_workqueue("fscache_operation", WQ_UNBOUND,
-					fscache_op_max_active);
-	if (!fscache_op_wq)
-		goto error_op_wq;
-
-	for_each_possible_cpu(cpu)
-		init_waitqueue_head(&per_cpu(fscache_object_cong_wait, cpu));
-
-	ret = fscache_proc_init();
-	if (ret < 0)
-		goto error_proc;
-
-#ifdef CONFIG_SYSCTL
-	ret = -ENOMEM;
-	fscache_sysctl_header = register_sysctl_table(fscache_sysctls_root);
-	if (!fscache_sysctl_header)
-		goto error_sysctl;
-#endif
-
-	fscache_cookie_jar = kmem_cache_create("fscache_cookie_jar",
-					       sizeof(struct fscache_cookie),
-					       0,
-					       0,
-					       fscache_cookie_init_once);
-	if (!fscache_cookie_jar) {
-		printk(KERN_NOTICE
-		       "FS-Cache: Failed to allocate a cookie jar\n");
-		ret = -ENOMEM;
-		goto error_cookie_jar;
-	}
-
-	fscache_root = kobject_create_and_add("fscache", kernel_kobj);
-	if (!fscache_root)
-		goto error_kobj;
-
-	printk(KERN_NOTICE "FS-Cache: Loaded\n");
-	return 0;
-
-error_kobj:
-	kmem_cache_destroy(fscache_cookie_jar);
-error_cookie_jar:
-#ifdef CONFIG_SYSCTL
-	unregister_sysctl_table(fscache_sysctl_header);
-error_sysctl:
-#endif
-	fscache_proc_cleanup();
-error_proc:
-	destroy_workqueue(fscache_op_wq);
-error_op_wq:
-	destroy_workqueue(fscache_object_wq);
-error_object_wq:
-	return ret;
-}
-
-fs_initcall(fscache_init);
-
-/*
- * clean up on module removal
- */
-static void __exit fscache_exit(void)
-{
-	_enter("");
-
-	kobject_put(fscache_root);
-	kmem_cache_destroy(fscache_cookie_jar);
-#ifdef CONFIG_SYSCTL
-	unregister_sysctl_table(fscache_sysctl_header);
-#endif
-	fscache_proc_cleanup();
-	destroy_workqueue(fscache_op_wq);
-	destroy_workqueue(fscache_object_wq);
-	printk(KERN_NOTICE "FS-Cache: Unloaded\n");
-}
-
-module_exit(fscache_exit);
-
-/*
- * wait_on_bit() sleep function for uninterruptible waiting
- */
-int fscache_wait_bit(void *flags)
-{
-	schedule();
-	return 0;
-}
-EXPORT_SYMBOL(fscache_wait_bit);
-
-/*
- * wait_on_bit() sleep function for interruptible waiting
- */
-int fscache_wait_bit_interruptible(void *flags)
-{
-	schedule();
-	return signal_pending(current);
-}
-EXPORT_SYMBOL(fscache_wait_bit_interruptible);
diff --git a/ANDROID_3.4.5/fs/fscache/netfs.c b/ANDROID_3.4.5/fs/fscache/netfs.c
deleted file mode 100644
index e028b8eb..00000000
--- a/ANDROID_3.4.5/fs/fscache/netfs.c
+++ /dev/null
@@ -1,103 +0,0 @@
-/* FS-Cache netfs (client) registration
- *
- * Copyright (C) 2008 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
- */
-
-#define FSCACHE_DEBUG_LEVEL COOKIE
-#include <linux/module.h>
-#include <linux/slab.h>
-#include "internal.h"
-
-static LIST_HEAD(fscache_netfs_list);
-
-/*
- * register a network filesystem for caching
- */
-int __fscache_register_netfs(struct fscache_netfs *netfs)
-{
-	struct fscache_netfs *ptr;
-	int ret;
-
-	_enter("{%s}", netfs->name);
-
-	INIT_LIST_HEAD(&netfs->link);
-
-	/* allocate a cookie for the primary index */
-	netfs->primary_index =
-		kmem_cache_zalloc(fscache_cookie_jar, GFP_KERNEL);
-
-	if (!netfs->primary_index) {
-		_leave(" = -ENOMEM");
-		return -ENOMEM;
-	}
-
-	/* initialise the primary index cookie */
-	atomic_set(&netfs->primary_index->usage, 1);
-	atomic_set(&netfs->primary_index->n_children, 0);
-
-	netfs->primary_index->def		= &fscache_fsdef_netfs_def;
-	netfs->primary_index->parent		= &fscache_fsdef_index;
-	netfs->primary_index->netfs_data	= netfs;
-
-	atomic_inc(&netfs->primary_index->parent->usage);
-	atomic_inc(&netfs->primary_index->parent->n_children);
-
-	spin_lock_init(&netfs->primary_index->lock);
-	INIT_HLIST_HEAD(&netfs->primary_index->backing_objects);
-
-	/* check the netfs type is not already present */
-	down_write(&fscache_addremove_sem);
-
-	ret = -EEXIST;
-	list_for_each_entry(ptr, &fscache_netfs_list, link) {
-		if (strcmp(ptr->name, netfs->name) == 0)
-			goto already_registered;
-	}
-
-	list_add(&netfs->link, &fscache_netfs_list);
-	ret = 0;
-
-	printk(KERN_NOTICE "FS-Cache: Netfs '%s' registered for caching\n",
-	       netfs->name);
-
-already_registered:
-	up_write(&fscache_addremove_sem);
-
-	if (ret < 0) {
-		netfs->primary_index->parent = NULL;
-		__fscache_cookie_put(netfs->primary_index);
-		netfs->primary_index = NULL;
-	}
-
-	_leave(" = %d", ret);
-	return ret;
-}
-EXPORT_SYMBOL(__fscache_register_netfs);
-
-/*
- * unregister a network filesystem from the cache
- * - all cookies must have been released first
- */
-void __fscache_unregister_netfs(struct fscache_netfs *netfs)
-{
-	_enter("{%s.%u}", netfs->name, netfs->version);
-
-	down_write(&fscache_addremove_sem);
-
-	list_del(&netfs->link);
-	fscache_relinquish_cookie(netfs->primary_index, 0);
-
-	up_write(&fscache_addremove_sem);
-
-	printk(KERN_NOTICE "FS-Cache: Netfs '%s' unregistered from caching\n",
-	       netfs->name);
-
-	_leave("");
-}
-EXPORT_SYMBOL(__fscache_unregister_netfs);
diff --git a/ANDROID_3.4.5/fs/fscache/object-list.c b/ANDROID_3.4.5/fs/fscache/object-list.c
deleted file mode 100644
index ebe29c58..00000000
--- a/ANDROID_3.4.5/fs/fscache/object-list.c
+++ /dev/null
@@ -1,432 +0,0 @@
-/* Global fscache object list maintainer and viewer
- *
- * Copyright (C) 2009 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
- */
-
-#define FSCACHE_DEBUG_LEVEL COOKIE
-#include <linux/module.h>
-#include <linux/seq_file.h>
-#include <linux/slab.h>
-#include <linux/key.h>
-#include <keys/user-type.h>
-#include "internal.h"
-
-static struct rb_root fscache_object_list;
-static DEFINE_RWLOCK(fscache_object_list_lock);
-
-struct fscache_objlist_data {
-	unsigned long	config;		/* display configuration */
-#define FSCACHE_OBJLIST_CONFIG_KEY	0x00000001	/* show object keys */
-#define FSCACHE_OBJLIST_CONFIG_AUX	0x00000002	/* show object auxdata */
-#define FSCACHE_OBJLIST_CONFIG_COOKIE	0x00000004	/* show objects with cookies */
-#define FSCACHE_OBJLIST_CONFIG_NOCOOKIE	0x00000008	/* show objects without cookies */
-#define FSCACHE_OBJLIST_CONFIG_BUSY	0x00000010	/* show busy objects */
-#define FSCACHE_OBJLIST_CONFIG_IDLE	0x00000020	/* show idle objects */
-#define FSCACHE_OBJLIST_CONFIG_PENDWR	0x00000040	/* show objects with pending writes */
-#define FSCACHE_OBJLIST_CONFIG_NOPENDWR	0x00000080	/* show objects without pending writes */
-#define FSCACHE_OBJLIST_CONFIG_READS	0x00000100	/* show objects with active reads */
-#define FSCACHE_OBJLIST_CONFIG_NOREADS	0x00000200	/* show objects without active reads */
-#define FSCACHE_OBJLIST_CONFIG_EVENTS	0x00000400	/* show objects with events */
-#define FSCACHE_OBJLIST_CONFIG_NOEVENTS	0x00000800	/* show objects without no events */
-#define FSCACHE_OBJLIST_CONFIG_WORK	0x00001000	/* show objects with work */
-#define FSCACHE_OBJLIST_CONFIG_NOWORK	0x00002000	/* show objects without work */
-
-	u8		buf[512];	/* key and aux data buffer */
-};
-
-/*
- * Add an object to the object list
- * - we use the address of the fscache_object structure as the key into the
- *   tree
- */
-void fscache_objlist_add(struct fscache_object *obj)
-{
-	struct fscache_object *xobj;
-	struct rb_node **p = &fscache_object_list.rb_node, *parent = NULL;
-
-	write_lock(&fscache_object_list_lock);
-
-	while (*p) {
-		parent = *p;
-		xobj = rb_entry(parent, struct fscache_object, objlist_link);
-
-		if (obj < xobj)
-			p = &(*p)->rb_left;
-		else if (obj > xobj)
-			p = &(*p)->rb_right;
-		else
-			BUG();
-	}
-
-	rb_link_node(&obj->objlist_link, parent, p);
-	rb_insert_color(&obj->objlist_link, &fscache_object_list);
-
-	write_unlock(&fscache_object_list_lock);
-}
-
-/**
- * fscache_object_destroy - Note that a cache object is about to be destroyed
- * @object: The object to be destroyed
- *
- * Note the imminent destruction and deallocation of a cache object record.
- */
-void fscache_object_destroy(struct fscache_object *obj)
-{
-	write_lock(&fscache_object_list_lock);
-
-	BUG_ON(RB_EMPTY_ROOT(&fscache_object_list));
-	rb_erase(&obj->objlist_link, &fscache_object_list);
-
-	write_unlock(&fscache_object_list_lock);
-}
-EXPORT_SYMBOL(fscache_object_destroy);
-
-/*
- * find the object in the tree on or after the specified index
- */
-static struct fscache_object *fscache_objlist_lookup(loff_t *_pos)
-{
-	struct fscache_object *pobj, *obj = NULL, *minobj = NULL;
-	struct rb_node *p;
-	unsigned long pos;
-
-	if (*_pos >= (unsigned long) ERR_PTR(-ENOENT))
-		return NULL;
-	pos = *_pos;
-
-	/* banners (can't represent line 0 by pos 0 as that would involve
-	 * returning a NULL pointer) */
-	if (pos == 0)
-		return (struct fscache_object *)(long)++(*_pos);
-	if (pos < 3)
-		return (struct fscache_object *)pos;
-
-	pobj = (struct fscache_object *)pos;
-	p = fscache_object_list.rb_node;
-	while (p) {
-		obj = rb_entry(p, struct fscache_object, objlist_link);
-		if (pobj < obj) {
-			if (!minobj || minobj > obj)
-				minobj = obj;
-			p = p->rb_left;
-		} else if (pobj > obj) {
-			p = p->rb_right;
-		} else {
-			minobj = obj;
-			break;
-		}
-		obj = NULL;
-	}
-
-	if (!minobj)
-		*_pos = (unsigned long) ERR_PTR(-ENOENT);
-	else if (minobj != obj)
-		*_pos = (unsigned long) minobj;
-	return minobj;
-}
-
-/*
- * set up the iterator to start reading from the first line
- */
-static void *fscache_objlist_start(struct seq_file *m, loff_t *_pos)
-	__acquires(&fscache_object_list_lock)
-{
-	read_lock(&fscache_object_list_lock);
-	return fscache_objlist_lookup(_pos);
-}
-
-/*
- * move to the next line
- */
-static void *fscache_objlist_next(struct seq_file *m, void *v, loff_t *_pos)
-{
-	(*_pos)++;
-	return fscache_objlist_lookup(_pos);
-}
-
-/*
- * clean up after reading
- */
-static void fscache_objlist_stop(struct seq_file *m, void *v)
-	__releases(&fscache_object_list_lock)
-{
-	read_unlock(&fscache_object_list_lock);
-}
-
-/*
- * display an object
- */
-static int fscache_objlist_show(struct seq_file *m, void *v)
-{
-	struct fscache_objlist_data *data = m->private;
-	struct fscache_object *obj = v;
-	unsigned long config = data->config;
-	uint16_t keylen, auxlen;
-	char _type[3], *type;
-	bool no_cookie;
-	u8 *buf = data->buf, *p;
-
-	if ((unsigned long) v == 1) {
-		seq_puts(m, "OBJECT   PARENT   STAT CHLDN OPS OOP IPR EX READS"
-			 " EM EV F S"
-			 " | NETFS_COOKIE_DEF TY FL NETFS_DATA");
-		if (config & (FSCACHE_OBJLIST_CONFIG_KEY |
-			      FSCACHE_OBJLIST_CONFIG_AUX))
-			seq_puts(m, "       ");
-		if (config & FSCACHE_OBJLIST_CONFIG_KEY)
-			seq_puts(m, "OBJECT_KEY");
-		if ((config & (FSCACHE_OBJLIST_CONFIG_KEY |
-			       FSCACHE_OBJLIST_CONFIG_AUX)) ==
-		    (FSCACHE_OBJLIST_CONFIG_KEY | FSCACHE_OBJLIST_CONFIG_AUX))
-			seq_puts(m, ", ");
-		if (config & FSCACHE_OBJLIST_CONFIG_AUX)
-			seq_puts(m, "AUX_DATA");
-		seq_puts(m, "\n");
-		return 0;
-	}
-
-	if ((unsigned long) v == 2) {
-		seq_puts(m, "======== ======== ==== ===== === === === == ====="
-			 " == == = ="
-			 " | ================ == == ================");
-		if (config & (FSCACHE_OBJLIST_CONFIG_KEY |
-			      FSCACHE_OBJLIST_CONFIG_AUX))
-			seq_puts(m, " ================");
-		seq_puts(m, "\n");
-		return 0;
-	}
-
-	/* filter out any unwanted objects */
-#define FILTER(criterion, _yes, _no)					\
-	do {								\
-		unsigned long yes = FSCACHE_OBJLIST_CONFIG_##_yes;	\
-		unsigned long no = FSCACHE_OBJLIST_CONFIG_##_no;	\
-		if (criterion) {					\
-			if (!(config & yes))				\
-				return 0;				\
-		} else {						\
-			if (!(config & no))				\
-				return 0;				\
-		}							\
-	} while(0)
-
-	if (~config) {
-		FILTER(obj->cookie,
-		       COOKIE, NOCOOKIE);
-		FILTER(obj->state != FSCACHE_OBJECT_ACTIVE ||
-		       obj->n_ops != 0 ||
-		       obj->n_obj_ops != 0 ||
-		       obj->flags ||
-		       !list_empty(&obj->dependents),
-		       BUSY, IDLE);
-		FILTER(test_bit(FSCACHE_OBJECT_PENDING_WRITE, &obj->flags),
-		       PENDWR, NOPENDWR);
-		FILTER(atomic_read(&obj->n_reads),
-		       READS, NOREADS);
-		FILTER(obj->events & obj->event_mask,
-		       EVENTS, NOEVENTS);
-		FILTER(work_busy(&obj->work), WORK, NOWORK);
-	}
-
-	seq_printf(m,
-		   "%8x %8x %s %5u %3u %3u %3u %2u %5u %2lx %2lx %1lx %1x | ",
-		   obj->debug_id,
-		   obj->parent ? obj->parent->debug_id : -1,
-		   fscache_object_states_short[obj->state],
-		   obj->n_children,
-		   obj->n_ops,
-		   obj->n_obj_ops,
-		   obj->n_in_progress,
-		   obj->n_exclusive,
-		   atomic_read(&obj->n_reads),
-		   obj->event_mask & FSCACHE_OBJECT_EVENTS_MASK,
-		   obj->events,
-		   obj->flags,
-		   work_busy(&obj->work));
-
-	no_cookie = true;
-	keylen = auxlen = 0;
-	if (obj->cookie) {
-		spin_lock(&obj->lock);
-		if (obj->cookie) {
-			switch (obj->cookie->def->type) {
-			case 0:
-				type = "IX";
-				break;
-			case 1:
-				type = "DT";
-				break;
-			default:
-				sprintf(_type, "%02u",
-					obj->cookie->def->type);
-				type = _type;
-				break;
-			}
-
-			seq_printf(m, "%-16s %s %2lx %16p",
-				   obj->cookie->def->name,
-				   type,
-				   obj->cookie->flags,
-				   obj->cookie->netfs_data);
-
-			if (obj->cookie->def->get_key &&
-			    config & FSCACHE_OBJLIST_CONFIG_KEY)
-				keylen = obj->cookie->def->get_key(
-					obj->cookie->netfs_data,
-					buf, 400);
-
-			if (obj->cookie->def->get_aux &&
-			    config & FSCACHE_OBJLIST_CONFIG_AUX)
-				auxlen = obj->cookie->def->get_aux(
-					obj->cookie->netfs_data,
-					buf + keylen, 512 - keylen);
-
-			no_cookie = false;
-		}
-		spin_unlock(&obj->lock);
-
-		if (!no_cookie && (keylen > 0 || auxlen > 0)) {
-			seq_printf(m, " ");
-			for (p = buf; keylen > 0; keylen--)
-				seq_printf(m, "%02x", *p++);
-			if (auxlen > 0) {
-				if (config & FSCACHE_OBJLIST_CONFIG_KEY)
-					seq_printf(m, ", ");
-				for (; auxlen > 0; auxlen--)
-					seq_printf(m, "%02x", *p++);
-			}
-		}
-	}
-
-	if (no_cookie)
-		seq_printf(m, "<no_cookie>\n");
-	else
-		seq_printf(m, "\n");
-	return 0;
-}
-
-static const struct seq_operations fscache_objlist_ops = {
-	.start		= fscache_objlist_start,
-	.stop		= fscache_objlist_stop,
-	.next		= fscache_objlist_next,
-	.show		= fscache_objlist_show,
-};
-
-/*
- * get the configuration for filtering the list
- */
-static void fscache_objlist_config(struct fscache_objlist_data *data)
-{
-#ifdef CONFIG_KEYS
-	struct user_key_payload *confkey;
-	unsigned long config;
-	struct key *key;
-	const char *buf;
-	int len;
-
-	key = request_key(&key_type_user, "fscache:objlist", NULL);
-	if (IS_ERR(key))
-		goto no_config;
-
-	config = 0;
-	rcu_read_lock();
-
-	confkey = key->payload.data;
-	buf = confkey->data;
-
-	for (len = confkey->datalen - 1; len >= 0; len--) {
-		switch (buf[len]) {
-		case 'K': config |= FSCACHE_OBJLIST_CONFIG_KEY;		break;
-		case 'A': config |= FSCACHE_OBJLIST_CONFIG_AUX;		break;
-		case 'C': config |= FSCACHE_OBJLIST_CONFIG_COOKIE;	break;
-		case 'c': config |= FSCACHE_OBJLIST_CONFIG_NOCOOKIE;	break;
-		case 'B': config |= FSCACHE_OBJLIST_CONFIG_BUSY;	break;
-		case 'b': config |= FSCACHE_OBJLIST_CONFIG_IDLE;	break;
-		case 'W': config |= FSCACHE_OBJLIST_CONFIG_PENDWR;	break;
-		case 'w': config |= FSCACHE_OBJLIST_CONFIG_NOPENDWR;	break;
-		case 'R': config |= FSCACHE_OBJLIST_CONFIG_READS;	break;
-		case 'r': config |= FSCACHE_OBJLIST_CONFIG_NOREADS;	break;
-		case 'S': config |= FSCACHE_OBJLIST_CONFIG_WORK;	break;
-		case 's': config |= FSCACHE_OBJLIST_CONFIG_NOWORK;	break;
-		}
-	}
-
-	rcu_read_unlock();
-	key_put(key);
-
-	if (!(config & (FSCACHE_OBJLIST_CONFIG_COOKIE | FSCACHE_OBJLIST_CONFIG_NOCOOKIE)))
-	    config   |= FSCACHE_OBJLIST_CONFIG_COOKIE | FSCACHE_OBJLIST_CONFIG_NOCOOKIE;
-	if (!(config & (FSCACHE_OBJLIST_CONFIG_BUSY | FSCACHE_OBJLIST_CONFIG_IDLE)))
-	    config   |= FSCACHE_OBJLIST_CONFIG_BUSY | FSCACHE_OBJLIST_CONFIG_IDLE;
-	if (!(config & (FSCACHE_OBJLIST_CONFIG_PENDWR | FSCACHE_OBJLIST_CONFIG_NOPENDWR)))
-	    config   |= FSCACHE_OBJLIST_CONFIG_PENDWR | FSCACHE_OBJLIST_CONFIG_NOPENDWR;
-	if (!(config & (FSCACHE_OBJLIST_CONFIG_READS | FSCACHE_OBJLIST_CONFIG_NOREADS)))
-	    config   |= FSCACHE_OBJLIST_CONFIG_READS | FSCACHE_OBJLIST_CONFIG_NOREADS;
-	if (!(config & (FSCACHE_OBJLIST_CONFIG_EVENTS | FSCACHE_OBJLIST_CONFIG_NOEVENTS)))
-	    config   |= FSCACHE_OBJLIST_CONFIG_EVENTS | FSCACHE_OBJLIST_CONFIG_NOEVENTS;
-	if (!(config & (FSCACHE_OBJLIST_CONFIG_WORK | FSCACHE_OBJLIST_CONFIG_NOWORK)))
-	    config   |= FSCACHE_OBJLIST_CONFIG_WORK | FSCACHE_OBJLIST_CONFIG_NOWORK;
-
-	data->config = config;
-	return;
-
-no_config:
-#endif
-	data->config = ULONG_MAX;
-}
-
-/*
- * open "/proc/fs/fscache/objects" to provide a list of active objects
- * - can be configured by a user-defined key added to the caller's keyrings
- */
-static int fscache_objlist_open(struct inode *inode, struct file *file)
-{
-	struct fscache_objlist_data *data;
-	struct seq_file *m;
-	int ret;
-
-	ret = seq_open(file, &fscache_objlist_ops);
-	if (ret < 0)
-		return ret;
-
-	m = file->private_data;
-
-	/* buffer for key extraction */
-	data = kmalloc(sizeof(struct fscache_objlist_data), GFP_KERNEL);
-	if (!data) {
-		seq_release(inode, file);
-		return -ENOMEM;
-	}
-
-	/* get the configuration key */
-	fscache_objlist_config(data);
-
-	m->private = data;
-	return 0;
-}
-
-/*
- * clean up on close
- */
-static int fscache_objlist_release(struct inode *inode, struct file *file)
-{
-	struct seq_file *m = file->private_data;
-
-	kfree(m->private);
-	m->private = NULL;
-	return seq_release(inode, file);
-}
-
-const struct file_operations fscache_objlist_fops = {
-	.owner		= THIS_MODULE,
-	.open		= fscache_objlist_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= fscache_objlist_release,
-};
diff --git a/ANDROID_3.4.5/fs/fscache/object.c b/ANDROID_3.4.5/fs/fscache/object.c
deleted file mode 100644
index b6b897c5..00000000
--- a/ANDROID_3.4.5/fs/fscache/object.c
+++ /dev/null
@@ -1,892 +0,0 @@
-/* FS-Cache object state machine handler
- *
- * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * See Documentation/filesystems/caching/object.txt for a description of the
- * object state machine and the in-kernel representations.
- */
-
-#define FSCACHE_DEBUG_LEVEL COOKIE
-#include <linux/module.h>
-#include "internal.h"
-
-const char *fscache_object_states[FSCACHE_OBJECT__NSTATES] = {
-	[FSCACHE_OBJECT_INIT]		= "OBJECT_INIT",
-	[FSCACHE_OBJECT_LOOKING_UP]	= "OBJECT_LOOKING_UP",
-	[FSCACHE_OBJECT_CREATING]	= "OBJECT_CREATING",
-	[FSCACHE_OBJECT_AVAILABLE]	= "OBJECT_AVAILABLE",
-	[FSCACHE_OBJECT_ACTIVE]		= "OBJECT_ACTIVE",
-	[FSCACHE_OBJECT_UPDATING]	= "OBJECT_UPDATING",
-	[FSCACHE_OBJECT_DYING]		= "OBJECT_DYING",
-	[FSCACHE_OBJECT_LC_DYING]	= "OBJECT_LC_DYING",
-	[FSCACHE_OBJECT_ABORT_INIT]	= "OBJECT_ABORT_INIT",
-	[FSCACHE_OBJECT_RELEASING]	= "OBJECT_RELEASING",
-	[FSCACHE_OBJECT_RECYCLING]	= "OBJECT_RECYCLING",
-	[FSCACHE_OBJECT_WITHDRAWING]	= "OBJECT_WITHDRAWING",
-	[FSCACHE_OBJECT_DEAD]		= "OBJECT_DEAD",
-};
-EXPORT_SYMBOL(fscache_object_states);
-
-const char fscache_object_states_short[FSCACHE_OBJECT__NSTATES][5] = {
-	[FSCACHE_OBJECT_INIT]		= "INIT",
-	[FSCACHE_OBJECT_LOOKING_UP]	= "LOOK",
-	[FSCACHE_OBJECT_CREATING]	= "CRTN",
-	[FSCACHE_OBJECT_AVAILABLE]	= "AVBL",
-	[FSCACHE_OBJECT_ACTIVE]		= "ACTV",
-	[FSCACHE_OBJECT_UPDATING]	= "UPDT",
-	[FSCACHE_OBJECT_DYING]		= "DYNG",
-	[FSCACHE_OBJECT_LC_DYING]	= "LCDY",
-	[FSCACHE_OBJECT_ABORT_INIT]	= "ABTI",
-	[FSCACHE_OBJECT_RELEASING]	= "RELS",
-	[FSCACHE_OBJECT_RECYCLING]	= "RCYC",
-	[FSCACHE_OBJECT_WITHDRAWING]	= "WTHD",
-	[FSCACHE_OBJECT_DEAD]		= "DEAD",
-};
-
-static int  fscache_get_object(struct fscache_object *);
-static void fscache_put_object(struct fscache_object *);
-static void fscache_initialise_object(struct fscache_object *);
-static void fscache_lookup_object(struct fscache_object *);
-static void fscache_object_available(struct fscache_object *);
-static void fscache_release_object(struct fscache_object *);
-static void fscache_withdraw_object(struct fscache_object *);
-static void fscache_enqueue_dependents(struct fscache_object *);
-static void fscache_dequeue_object(struct fscache_object *);
-
-/*
- * we need to notify the parent when an op completes that we had outstanding
- * upon it
- */
-static inline void fscache_done_parent_op(struct fscache_object *object)
-{
-	struct fscache_object *parent = object->parent;
-
-	_enter("OBJ%x {OBJ%x,%x}",
-	       object->debug_id, parent->debug_id, parent->n_ops);
-
-	spin_lock_nested(&parent->lock, 1);
-	parent->n_ops--;
-	parent->n_obj_ops--;
-	if (parent->n_ops == 0)
-		fscache_raise_event(parent, FSCACHE_OBJECT_EV_CLEARED);
-	spin_unlock(&parent->lock);
-}
-
-/*
- * process events that have been sent to an object's state machine
- * - initiates parent lookup
- * - does object lookup
- * - does object creation
- * - does object recycling and retirement
- * - does object withdrawal
- */
-static void fscache_object_state_machine(struct fscache_object *object)
-{
-	enum fscache_object_state new_state;
-	struct fscache_cookie *cookie;
-
-	ASSERT(object != NULL);
-
-	_enter("{OBJ%x,%s,%lx}",
-	       object->debug_id, fscache_object_states[object->state],
-	       object->events);
-
-	switch (object->state) {
-		/* wait for the parent object to become ready */
-	case FSCACHE_OBJECT_INIT:
-		object->event_mask =
-			ULONG_MAX & ~(1 << FSCACHE_OBJECT_EV_CLEARED);
-		fscache_initialise_object(object);
-		goto done;
-
-		/* look up the object metadata on disk */
-	case FSCACHE_OBJECT_LOOKING_UP:
-		fscache_lookup_object(object);
-		goto lookup_transit;
-
-		/* create the object metadata on disk */
-	case FSCACHE_OBJECT_CREATING:
-		fscache_lookup_object(object);
-		goto lookup_transit;
-
-		/* handle an object becoming available; start pending
-		 * operations and queue dependent operations for processing */
-	case FSCACHE_OBJECT_AVAILABLE:
-		fscache_object_available(object);
-		goto active_transit;
-
-		/* normal running state */
-	case FSCACHE_OBJECT_ACTIVE:
-		goto active_transit;
-
-		/* update the object metadata on disk */
-	case FSCACHE_OBJECT_UPDATING:
-		clear_bit(FSCACHE_OBJECT_EV_UPDATE, &object->events);
-		fscache_stat(&fscache_n_updates_run);
-		fscache_stat(&fscache_n_cop_update_object);
-		object->cache->ops->update_object(object);
-		fscache_stat_d(&fscache_n_cop_update_object);
-		goto active_transit;
-
-		/* handle an object dying during lookup or creation */
-	case FSCACHE_OBJECT_LC_DYING:
-		object->event_mask &= ~(1 << FSCACHE_OBJECT_EV_UPDATE);
-		fscache_stat(&fscache_n_cop_lookup_complete);
-		object->cache->ops->lookup_complete(object);
-		fscache_stat_d(&fscache_n_cop_lookup_complete);
-
-		spin_lock(&object->lock);
-		object->state = FSCACHE_OBJECT_DYING;
-		cookie = object->cookie;
-		if (cookie) {
-			if (test_and_clear_bit(FSCACHE_COOKIE_LOOKING_UP,
-					       &cookie->flags))
-				wake_up_bit(&cookie->flags,
-					    FSCACHE_COOKIE_LOOKING_UP);
-			if (test_and_clear_bit(FSCACHE_COOKIE_CREATING,
-					       &cookie->flags))
-				wake_up_bit(&cookie->flags,
-					    FSCACHE_COOKIE_CREATING);
-		}
-		spin_unlock(&object->lock);
-
-		fscache_done_parent_op(object);
-
-		/* wait for completion of all active operations on this object
-		 * and the death of all child objects of this object */
-	case FSCACHE_OBJECT_DYING:
-	dying:
-		clear_bit(FSCACHE_OBJECT_EV_CLEARED, &object->events);
-		spin_lock(&object->lock);
-		_debug("dying OBJ%x {%d,%d}",
-		       object->debug_id, object->n_ops, object->n_children);
-		if (object->n_ops == 0 && object->n_children == 0) {
-			object->event_mask &=
-				~(1 << FSCACHE_OBJECT_EV_CLEARED);
-			object->event_mask |=
-				(1 << FSCACHE_OBJECT_EV_WITHDRAW) |
-				(1 << FSCACHE_OBJECT_EV_RETIRE) |
-				(1 << FSCACHE_OBJECT_EV_RELEASE) |
-				(1 << FSCACHE_OBJECT_EV_ERROR);
-		} else {
-			object->event_mask &=
-				~((1 << FSCACHE_OBJECT_EV_WITHDRAW) |
-				  (1 << FSCACHE_OBJECT_EV_RETIRE) |
-				  (1 << FSCACHE_OBJECT_EV_RELEASE) |
-				  (1 << FSCACHE_OBJECT_EV_ERROR));
-			object->event_mask |=
-				1 << FSCACHE_OBJECT_EV_CLEARED;
-		}
-		spin_unlock(&object->lock);
-		fscache_enqueue_dependents(object);
-		fscache_start_operations(object);
-		goto terminal_transit;
-
-		/* handle an abort during initialisation */
-	case FSCACHE_OBJECT_ABORT_INIT:
-		_debug("handle abort init %lx", object->events);
-		object->event_mask &= ~(1 << FSCACHE_OBJECT_EV_UPDATE);
-
-		spin_lock(&object->lock);
-		fscache_dequeue_object(object);
-
-		object->state = FSCACHE_OBJECT_DYING;
-		if (test_and_clear_bit(FSCACHE_COOKIE_CREATING,
-				       &object->cookie->flags))
-			wake_up_bit(&object->cookie->flags,
-				    FSCACHE_COOKIE_CREATING);
-		spin_unlock(&object->lock);
-		goto dying;
-
-		/* handle the netfs releasing an object and possibly marking it
-		 * obsolete too */
-	case FSCACHE_OBJECT_RELEASING:
-	case FSCACHE_OBJECT_RECYCLING:
-		object->event_mask &=
-			~((1 << FSCACHE_OBJECT_EV_WITHDRAW) |
-			  (1 << FSCACHE_OBJECT_EV_RETIRE) |
-			  (1 << FSCACHE_OBJECT_EV_RELEASE) |
-			  (1 << FSCACHE_OBJECT_EV_ERROR));
-		fscache_release_object(object);
-		spin_lock(&object->lock);
-		object->state = FSCACHE_OBJECT_DEAD;
-		spin_unlock(&object->lock);
-		fscache_stat(&fscache_n_object_dead);
-		goto terminal_transit;
-
-		/* handle the parent cache of this object being withdrawn from
-		 * active service */
-	case FSCACHE_OBJECT_WITHDRAWING:
-		object->event_mask &=
-			~((1 << FSCACHE_OBJECT_EV_WITHDRAW) |
-			  (1 << FSCACHE_OBJECT_EV_RETIRE) |
-			  (1 << FSCACHE_OBJECT_EV_RELEASE) |
-			  (1 << FSCACHE_OBJECT_EV_ERROR));
-		fscache_withdraw_object(object);
-		spin_lock(&object->lock);
-		object->state = FSCACHE_OBJECT_DEAD;
-		spin_unlock(&object->lock);
-		fscache_stat(&fscache_n_object_dead);
-		goto terminal_transit;
-
-		/* complain about the object being woken up once it is
-		 * deceased */
-	case FSCACHE_OBJECT_DEAD:
-		printk(KERN_ERR "FS-Cache:"
-		       " Unexpected event in dead state %lx\n",
-		       object->events & object->event_mask);
-		BUG();
-
-	default:
-		printk(KERN_ERR "FS-Cache: Unknown object state %u\n",
-		       object->state);
-		BUG();
-	}
-
-	/* determine the transition from a lookup state */
-lookup_transit:
-	switch (fls(object->events & object->event_mask) - 1) {
-	case FSCACHE_OBJECT_EV_WITHDRAW:
-	case FSCACHE_OBJECT_EV_RETIRE:
-	case FSCACHE_OBJECT_EV_RELEASE:
-	case FSCACHE_OBJECT_EV_ERROR:
-		new_state = FSCACHE_OBJECT_LC_DYING;
-		goto change_state;
-	case FSCACHE_OBJECT_EV_REQUEUE:
-		goto done;
-	case -1:
-		goto done; /* sleep until event */
-	default:
-		goto unsupported_event;
-	}
-
-	/* determine the transition from an active state */
-active_transit:
-	switch (fls(object->events & object->event_mask) - 1) {
-	case FSCACHE_OBJECT_EV_WITHDRAW:
-	case FSCACHE_OBJECT_EV_RETIRE:
-	case FSCACHE_OBJECT_EV_RELEASE:
-	case FSCACHE_OBJECT_EV_ERROR:
-		new_state = FSCACHE_OBJECT_DYING;
-		goto change_state;
-	case FSCACHE_OBJECT_EV_UPDATE:
-		new_state = FSCACHE_OBJECT_UPDATING;
-		goto change_state;
-	case -1:
-		new_state = FSCACHE_OBJECT_ACTIVE;
-		goto change_state; /* sleep until event */
-	default:
-		goto unsupported_event;
-	}
-
-	/* determine the transition from a terminal state */
-terminal_transit:
-	switch (fls(object->events & object->event_mask) - 1) {
-	case FSCACHE_OBJECT_EV_WITHDRAW:
-		new_state = FSCACHE_OBJECT_WITHDRAWING;
-		goto change_state;
-	case FSCACHE_OBJECT_EV_RETIRE:
-		new_state = FSCACHE_OBJECT_RECYCLING;
-		goto change_state;
-	case FSCACHE_OBJECT_EV_RELEASE:
-		new_state = FSCACHE_OBJECT_RELEASING;
-		goto change_state;
-	case FSCACHE_OBJECT_EV_ERROR:
-		new_state = FSCACHE_OBJECT_WITHDRAWING;
-		goto change_state;
-	case FSCACHE_OBJECT_EV_CLEARED:
-		new_state = FSCACHE_OBJECT_DYING;
-		goto change_state;
-	case -1:
-		goto done; /* sleep until event */
-	default:
-		goto unsupported_event;
-	}
-
-change_state:
-	spin_lock(&object->lock);
-	object->state = new_state;
-	spin_unlock(&object->lock);
-
-done:
-	_leave(" [->%s]", fscache_object_states[object->state]);
-	return;
-
-unsupported_event:
-	printk(KERN_ERR "FS-Cache:"
-	       " Unsupported event %lx [mask %lx] in state %s\n",
-	       object->events, object->event_mask,
-	       fscache_object_states[object->state]);
-	BUG();
-}
-
-/*
- * execute an object
- */
-void fscache_object_work_func(struct work_struct *work)
-{
-	struct fscache_object *object =
-		container_of(work, struct fscache_object, work);
-	unsigned long start;
-
-	_enter("{OBJ%x}", object->debug_id);
-
-	start = jiffies;
-	fscache_object_state_machine(object);
-	fscache_hist(fscache_objs_histogram, start);
-	if (object->events & object->event_mask)
-		fscache_enqueue_object(object);
-	clear_bit(FSCACHE_OBJECT_EV_REQUEUE, &object->events);
-	fscache_put_object(object);
-}
-EXPORT_SYMBOL(fscache_object_work_func);
-
-/*
- * initialise an object
- * - check the specified object's parent to see if we can make use of it
- *   immediately to do a creation
- * - we may need to start the process of creating a parent and we need to wait
- *   for the parent's lookup and creation to complete if it's not there yet
- * - an object's cookie is pinned until we clear FSCACHE_COOKIE_CREATING on the
- *   leaf-most cookies of the object and all its children
- */
-static void fscache_initialise_object(struct fscache_object *object)
-{
-	struct fscache_object *parent;
-
-	_enter("");
-	ASSERT(object->cookie != NULL);
-	ASSERT(object->cookie->parent != NULL);
-
-	if (object->events & ((1 << FSCACHE_OBJECT_EV_ERROR) |
-			      (1 << FSCACHE_OBJECT_EV_RELEASE) |
-			      (1 << FSCACHE_OBJECT_EV_RETIRE) |
-			      (1 << FSCACHE_OBJECT_EV_WITHDRAW))) {
-		_debug("abort init %lx", object->events);
-		spin_lock(&object->lock);
-		object->state = FSCACHE_OBJECT_ABORT_INIT;
-		spin_unlock(&object->lock);
-		return;
-	}
-
-	spin_lock(&object->cookie->lock);
-	spin_lock_nested(&object->cookie->parent->lock, 1);
-
-	parent = object->parent;
-	if (!parent) {
-		_debug("no parent");
-		set_bit(FSCACHE_OBJECT_EV_WITHDRAW, &object->events);
-	} else {
-		spin_lock(&object->lock);
-		spin_lock_nested(&parent->lock, 1);
-		_debug("parent %s", fscache_object_states[parent->state]);
-
-		if (parent->state >= FSCACHE_OBJECT_DYING) {
-			_debug("bad parent");
-			set_bit(FSCACHE_OBJECT_EV_WITHDRAW, &object->events);
-		} else if (parent->state < FSCACHE_OBJECT_AVAILABLE) {
-			_debug("wait");
-
-			/* we may get woken up in this state by child objects
-			 * binding on to us, so we need to make sure we don't
-			 * add ourself to the list multiple times */
-			if (list_empty(&object->dep_link)) {
-				fscache_stat(&fscache_n_cop_grab_object);
-				object->cache->ops->grab_object(object);
-				fscache_stat_d(&fscache_n_cop_grab_object);
-				list_add(&object->dep_link,
-					 &parent->dependents);
-
-				/* fscache_acquire_non_index_cookie() uses this
-				 * to wake the chain up */
-				if (parent->state == FSCACHE_OBJECT_INIT)
-					fscache_enqueue_object(parent);
-			}
-		} else {
-			_debug("go");
-			parent->n_ops++;
-			parent->n_obj_ops++;
-			object->lookup_jif = jiffies;
-			object->state = FSCACHE_OBJECT_LOOKING_UP;
-			set_bit(FSCACHE_OBJECT_EV_REQUEUE, &object->events);
-		}
-
-		spin_unlock(&parent->lock);
-		spin_unlock(&object->lock);
-	}
-
-	spin_unlock(&object->cookie->parent->lock);
-	spin_unlock(&object->cookie->lock);
-	_leave("");
-}
-
-/*
- * look an object up in the cache from which it was allocated
- * - we hold an "access lock" on the parent object, so the parent object cannot
- *   be withdrawn by either party till we've finished
- * - an object's cookie is pinned until we clear FSCACHE_COOKIE_CREATING on the
- *   leaf-most cookies of the object and all its children
- */
-static void fscache_lookup_object(struct fscache_object *object)
-{
-	struct fscache_cookie *cookie = object->cookie;
-	struct fscache_object *parent;
-	int ret;
-
-	_enter("");
-
-	parent = object->parent;
-	ASSERT(parent != NULL);
-	ASSERTCMP(parent->n_ops, >, 0);
-	ASSERTCMP(parent->n_obj_ops, >, 0);
-
-	/* make sure the parent is still available */
-	ASSERTCMP(parent->state, >=, FSCACHE_OBJECT_AVAILABLE);
-
-	if (parent->state >= FSCACHE_OBJECT_DYING ||
-	    test_bit(FSCACHE_IOERROR, &object->cache->flags)) {
-		_debug("unavailable");
-		set_bit(FSCACHE_OBJECT_EV_WITHDRAW, &object->events);
-		_leave("");
-		return;
-	}
-
-	_debug("LOOKUP \"%s/%s\" in \"%s\"",
-	       parent->cookie->def->name, cookie->def->name,
-	       object->cache->tag->name);
-
-	fscache_stat(&fscache_n_object_lookups);
-	fscache_stat(&fscache_n_cop_lookup_object);
-	ret = object->cache->ops->lookup_object(object);
-	fscache_stat_d(&fscache_n_cop_lookup_object);
-
-	if (test_bit(FSCACHE_OBJECT_EV_ERROR, &object->events))
-		set_bit(FSCACHE_COOKIE_UNAVAILABLE, &cookie->flags);
-
-	if (ret == -ETIMEDOUT) {
-		/* probably stuck behind another object, so move this one to
-		 * the back of the queue */
-		fscache_stat(&fscache_n_object_lookups_timed_out);
-		set_bit(FSCACHE_OBJECT_EV_REQUEUE, &object->events);
-	}
-
-	_leave("");
-}
-
-/**
- * fscache_object_lookup_negative - Note negative cookie lookup
- * @object: Object pointing to cookie to mark
- *
- * Note negative lookup, permitting those waiting to read data from an already
- * existing backing object to continue as there's no data for them to read.
- */
-void fscache_object_lookup_negative(struct fscache_object *object)
-{
-	struct fscache_cookie *cookie = object->cookie;
-
-	_enter("{OBJ%x,%s}",
-	       object->debug_id, fscache_object_states[object->state]);
-
-	spin_lock(&object->lock);
-	if (object->state == FSCACHE_OBJECT_LOOKING_UP) {
-		fscache_stat(&fscache_n_object_lookups_negative);
-
-		/* transit here to allow write requests to begin stacking up
-		 * and read requests to begin returning ENODATA */
-		object->state = FSCACHE_OBJECT_CREATING;
-		spin_unlock(&object->lock);
-
-		set_bit(FSCACHE_COOKIE_PENDING_FILL, &cookie->flags);
-		set_bit(FSCACHE_COOKIE_NO_DATA_YET, &cookie->flags);
-
-		_debug("wake up lookup %p", &cookie->flags);
-		smp_mb__before_clear_bit();
-		clear_bit(FSCACHE_COOKIE_LOOKING_UP, &cookie->flags);
-		smp_mb__after_clear_bit();
-		wake_up_bit(&cookie->flags, FSCACHE_COOKIE_LOOKING_UP);
-		set_bit(FSCACHE_OBJECT_EV_REQUEUE, &object->events);
-	} else {
-		ASSERTCMP(object->state, ==, FSCACHE_OBJECT_CREATING);
-		spin_unlock(&object->lock);
-	}
-
-	_leave("");
-}
-EXPORT_SYMBOL(fscache_object_lookup_negative);
-
-/**
- * fscache_obtained_object - Note successful object lookup or creation
- * @object: Object pointing to cookie to mark
- *
- * Note successful lookup and/or creation, permitting those waiting to write
- * data to a backing object to continue.
- *
- * Note that after calling this, an object's cookie may be relinquished by the
- * netfs, and so must be accessed with object lock held.
- */
-void fscache_obtained_object(struct fscache_object *object)
-{
-	struct fscache_cookie *cookie = object->cookie;
-
-	_enter("{OBJ%x,%s}",
-	       object->debug_id, fscache_object_states[object->state]);
-
-	/* if we were still looking up, then we must have a positive lookup
-	 * result, in which case there may be data available */
-	spin_lock(&object->lock);
-	if (object->state == FSCACHE_OBJECT_LOOKING_UP) {
-		fscache_stat(&fscache_n_object_lookups_positive);
-
-		clear_bit(FSCACHE_COOKIE_NO_DATA_YET, &cookie->flags);
-
-		object->state = FSCACHE_OBJECT_AVAILABLE;
-		spin_unlock(&object->lock);
-
-		smp_mb__before_clear_bit();
-		clear_bit(FSCACHE_COOKIE_LOOKING_UP, &cookie->flags);
-		smp_mb__after_clear_bit();
-		wake_up_bit(&cookie->flags, FSCACHE_COOKIE_LOOKING_UP);
-		set_bit(FSCACHE_OBJECT_EV_REQUEUE, &object->events);
-	} else {
-		ASSERTCMP(object->state, ==, FSCACHE_OBJECT_CREATING);
-		fscache_stat(&fscache_n_object_created);
-
-		object->state = FSCACHE_OBJECT_AVAILABLE;
-		spin_unlock(&object->lock);
-		set_bit(FSCACHE_OBJECT_EV_REQUEUE, &object->events);
-		smp_wmb();
-	}
-
-	if (test_and_clear_bit(FSCACHE_COOKIE_CREATING, &cookie->flags))
-		wake_up_bit(&cookie->flags, FSCACHE_COOKIE_CREATING);
-
-	_leave("");
-}
-EXPORT_SYMBOL(fscache_obtained_object);
-
-/*
- * handle an object that has just become available
- */
-static void fscache_object_available(struct fscache_object *object)
-{
-	_enter("{OBJ%x}", object->debug_id);
-
-	spin_lock(&object->lock);
-
-	if (object->cookie &&
-	    test_and_clear_bit(FSCACHE_COOKIE_CREATING, &object->cookie->flags))
-		wake_up_bit(&object->cookie->flags, FSCACHE_COOKIE_CREATING);
-
-	fscache_done_parent_op(object);
-	if (object->n_in_progress == 0) {
-		if (object->n_ops > 0) {
-			ASSERTCMP(object->n_ops, >=, object->n_obj_ops);
-			ASSERTIF(object->n_ops > object->n_obj_ops,
-				 !list_empty(&object->pending_ops));
-			fscache_start_operations(object);
-		} else {
-			ASSERT(list_empty(&object->pending_ops));
-		}
-	}
-	spin_unlock(&object->lock);
-
-	fscache_stat(&fscache_n_cop_lookup_complete);
-	object->cache->ops->lookup_complete(object);
-	fscache_stat_d(&fscache_n_cop_lookup_complete);
-	fscache_enqueue_dependents(object);
-
-	fscache_hist(fscache_obj_instantiate_histogram, object->lookup_jif);
-	fscache_stat(&fscache_n_object_avail);
-
-	_leave("");
-}
-
-/*
- * drop an object's attachments
- */
-static void fscache_drop_object(struct fscache_object *object)
-{
-	struct fscache_object *parent = object->parent;
-	struct fscache_cache *cache = object->cache;
-
-	_enter("{OBJ%x,%d}", object->debug_id, object->n_children);
-
-	ASSERTCMP(object->cookie, ==, NULL);
-	ASSERT(hlist_unhashed(&object->cookie_link));
-
-	spin_lock(&cache->object_list_lock);
-	list_del_init(&object->cache_link);
-	spin_unlock(&cache->object_list_lock);
-
-	fscache_stat(&fscache_n_cop_drop_object);
-	cache->ops->drop_object(object);
-	fscache_stat_d(&fscache_n_cop_drop_object);
-
-	if (parent) {
-		_debug("release parent OBJ%x {%d}",
-		       parent->debug_id, parent->n_children);
-
-		spin_lock(&parent->lock);
-		parent->n_children--;
-		if (parent->n_children == 0)
-			fscache_raise_event(parent, FSCACHE_OBJECT_EV_CLEARED);
-		spin_unlock(&parent->lock);
-		object->parent = NULL;
-	}
-
-	/* this just shifts the object release to the work processor */
-	fscache_put_object(object);
-
-	_leave("");
-}
-
-/*
- * release or recycle an object that the netfs has discarded
- */
-static void fscache_release_object(struct fscache_object *object)
-{
-	_enter("");
-
-	fscache_drop_object(object);
-}
-
-/*
- * withdraw an object from active service
- */
-static void fscache_withdraw_object(struct fscache_object *object)
-{
-	struct fscache_cookie *cookie;
-	bool detached;
-
-	_enter("");
-
-	spin_lock(&object->lock);
-	cookie = object->cookie;
-	if (cookie) {
-		/* need to get the cookie lock before the object lock, starting
-		 * from the object pointer */
-		atomic_inc(&cookie->usage);
-		spin_unlock(&object->lock);
-
-		detached = false;
-		spin_lock(&cookie->lock);
-		spin_lock(&object->lock);
-
-		if (object->cookie == cookie) {
-			hlist_del_init(&object->cookie_link);
-			object->cookie = NULL;
-			detached = true;
-		}
-		spin_unlock(&cookie->lock);
-		fscache_cookie_put(cookie);
-		if (detached)
-			fscache_cookie_put(cookie);
-	}
-
-	spin_unlock(&object->lock);
-
-	fscache_drop_object(object);
-}
-
-/*
- * withdraw an object from active service at the behest of the cache
- * - need break the links to a cached object cookie
- * - called under two situations:
- *   (1) recycler decides to reclaim an in-use object
- *   (2) a cache is unmounted
- * - have to take care as the cookie can be being relinquished by the netfs
- *   simultaneously
- * - the object is pinned by the caller holding a refcount on it
- */
-void fscache_withdrawing_object(struct fscache_cache *cache,
-				struct fscache_object *object)
-{
-	bool enqueue = false;
-
-	_enter(",OBJ%x", object->debug_id);
-
-	spin_lock(&object->lock);
-	if (object->state < FSCACHE_OBJECT_WITHDRAWING) {
-		object->state = FSCACHE_OBJECT_WITHDRAWING;
-		enqueue = true;
-	}
-	spin_unlock(&object->lock);
-
-	if (enqueue)
-		fscache_enqueue_object(object);
-
-	_leave("");
-}
-
-/*
- * get a ref on an object
- */
-static int fscache_get_object(struct fscache_object *object)
-{
-	int ret;
-
-	fscache_stat(&fscache_n_cop_grab_object);
-	ret = object->cache->ops->grab_object(object) ? 0 : -EAGAIN;
-	fscache_stat_d(&fscache_n_cop_grab_object);
-	return ret;
-}
-
-/*
- * discard a ref on a work item
- */
-static void fscache_put_object(struct fscache_object *object)
-{
-	fscache_stat(&fscache_n_cop_put_object);
-	object->cache->ops->put_object(object);
-	fscache_stat_d(&fscache_n_cop_put_object);
-}
-
-/*
- * enqueue an object for metadata-type processing
- */
-void fscache_enqueue_object(struct fscache_object *object)
-{
-	_enter("{OBJ%x}", object->debug_id);
-
-	if (fscache_get_object(object) >= 0) {
-		wait_queue_head_t *cong_wq =
-			&get_cpu_var(fscache_object_cong_wait);
-
-		if (queue_work(fscache_object_wq, &object->work)) {
-			if (fscache_object_congested())
-				wake_up(cong_wq);
-		} else
-			fscache_put_object(object);
-
-		put_cpu_var(fscache_object_cong_wait);
-	}
-}
-
-/**
- * fscache_object_sleep_till_congested - Sleep until object wq is congested
- * @timoutp: Scheduler sleep timeout
- *
- * Allow an object handler to sleep until the object workqueue is congested.
- *
- * The caller must set up a wake up event before calling this and must have set
- * the appropriate sleep mode (such as TASK_UNINTERRUPTIBLE) and tested its own
- * condition before calling this function as no test is made here.
- *
- * %true is returned if the object wq is congested, %false otherwise.
- */
-bool fscache_object_sleep_till_congested(signed long *timeoutp)
-{
-	wait_queue_head_t *cong_wq = &__get_cpu_var(fscache_object_cong_wait);
-	DEFINE_WAIT(wait);
-
-	if (fscache_object_congested())
-		return true;
-
-	add_wait_queue_exclusive(cong_wq, &wait);
-	if (!fscache_object_congested())
-		*timeoutp = schedule_timeout(*timeoutp);
-	finish_wait(cong_wq, &wait);
-
-	return fscache_object_congested();
-}
-EXPORT_SYMBOL_GPL(fscache_object_sleep_till_congested);
-
-/*
- * enqueue the dependents of an object for metadata-type processing
- * - the caller must hold the object's lock
- * - this may cause an already locked object to wind up being processed again
- */
-static void fscache_enqueue_dependents(struct fscache_object *object)
-{
-	struct fscache_object *dep;
-
-	_enter("{OBJ%x}", object->debug_id);
-
-	if (list_empty(&object->dependents))
-		return;
-
-	spin_lock(&object->lock);
-
-	while (!list_empty(&object->dependents)) {
-		dep = list_entry(object->dependents.next,
-				 struct fscache_object, dep_link);
-		list_del_init(&dep->dep_link);
-
-
-		/* sort onto appropriate lists */
-		fscache_enqueue_object(dep);
-		fscache_put_object(dep);
-
-		if (!list_empty(&object->dependents))
-			cond_resched_lock(&object->lock);
-	}
-
-	spin_unlock(&object->lock);
-}
-
-/*
- * remove an object from whatever queue it's waiting on
- * - the caller must hold object->lock
- */
-void fscache_dequeue_object(struct fscache_object *object)
-{
-	_enter("{OBJ%x}", object->debug_id);
-
-	if (!list_empty(&object->dep_link)) {
-		spin_lock(&object->parent->lock);
-		list_del_init(&object->dep_link);
-		spin_unlock(&object->parent->lock);
-	}
-
-	_leave("");
-}
-
-/**
- * fscache_check_aux - Ask the netfs whether an object on disk is still valid
- * @object: The object to ask about
- * @data: The auxiliary data for the object
- * @datalen: The size of the auxiliary data
- *
- * This function consults the netfs about the coherency state of an object
- */
-enum fscache_checkaux fscache_check_aux(struct fscache_object *object,
-					const void *data, uint16_t datalen)
-{
-	enum fscache_checkaux result;
-
-	if (!object->cookie->def->check_aux) {
-		fscache_stat(&fscache_n_checkaux_none);
-		return FSCACHE_CHECKAUX_OKAY;
-	}
-
-	result = object->cookie->def->check_aux(object->cookie->netfs_data,
-						data, datalen);
-	switch (result) {
-		/* entry okay as is */
-	case FSCACHE_CHECKAUX_OKAY:
-		fscache_stat(&fscache_n_checkaux_okay);
-		break;
-
-		/* entry requires update */
-	case FSCACHE_CHECKAUX_NEEDS_UPDATE:
-		fscache_stat(&fscache_n_checkaux_update);
-		break;
-
-		/* entry requires deletion */
-	case FSCACHE_CHECKAUX_OBSOLETE:
-		fscache_stat(&fscache_n_checkaux_obsolete);
-		break;
-
-	default:
-		BUG();
-	}
-
-	return result;
-}
-EXPORT_SYMBOL(fscache_check_aux);
diff --git a/ANDROID_3.4.5/fs/fscache/operation.c b/ANDROID_3.4.5/fs/fscache/operation.c
deleted file mode 100644
index 30afdfa7..00000000
--- a/ANDROID_3.4.5/fs/fscache/operation.c
+++ /dev/null
@@ -1,463 +0,0 @@
-/* FS-Cache worker operation management routines
- *
- * Copyright (C) 2008 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * See Documentation/filesystems/caching/operations.txt
- */
-
-#define FSCACHE_DEBUG_LEVEL OPERATION
-#include <linux/module.h>
-#include <linux/seq_file.h>
-#include <linux/slab.h>
-#include "internal.h"
-
-atomic_t fscache_op_debug_id;
-EXPORT_SYMBOL(fscache_op_debug_id);
-
-/**
- * fscache_enqueue_operation - Enqueue an operation for processing
- * @op: The operation to enqueue
- *
- * Enqueue an operation for processing by the FS-Cache thread pool.
- *
- * This will get its own ref on the object.
- */
-void fscache_enqueue_operation(struct fscache_operation *op)
-{
-	_enter("{OBJ%x OP%x,%u}",
-	       op->object->debug_id, op->debug_id, atomic_read(&op->usage));
-
-	ASSERT(list_empty(&op->pend_link));
-	ASSERT(op->processor != NULL);
-	ASSERTCMP(op->object->state, >=, FSCACHE_OBJECT_AVAILABLE);
-	ASSERTCMP(atomic_read(&op->usage), >, 0);
-
-	fscache_stat(&fscache_n_op_enqueue);
-	switch (op->flags & FSCACHE_OP_TYPE) {
-	case FSCACHE_OP_ASYNC:
-		_debug("queue async");
-		atomic_inc(&op->usage);
-		if (!queue_work(fscache_op_wq, &op->work))
-			fscache_put_operation(op);
-		break;
-	case FSCACHE_OP_MYTHREAD:
-		_debug("queue for caller's attention");
-		break;
-	default:
-		printk(KERN_ERR "FS-Cache: Unexpected op type %lx",
-		       op->flags);
-		BUG();
-		break;
-	}
-}
-EXPORT_SYMBOL(fscache_enqueue_operation);
-
-/*
- * start an op running
- */
-static void fscache_run_op(struct fscache_object *object,
-			   struct fscache_operation *op)
-{
-	object->n_in_progress++;
-	if (test_and_clear_bit(FSCACHE_OP_WAITING, &op->flags))
-		wake_up_bit(&op->flags, FSCACHE_OP_WAITING);
-	if (op->processor)
-		fscache_enqueue_operation(op);
-	fscache_stat(&fscache_n_op_run);
-}
-
-/*
- * submit an exclusive operation for an object
- * - other ops are excluded from running simultaneously with this one
- * - this gets any extra refs it needs on an op
- */
-int fscache_submit_exclusive_op(struct fscache_object *object,
-				struct fscache_operation *op)
-{
-	int ret;
-
-	_enter("{OBJ%x OP%x},", object->debug_id, op->debug_id);
-
-	spin_lock(&object->lock);
-	ASSERTCMP(object->n_ops, >=, object->n_in_progress);
-	ASSERTCMP(object->n_ops, >=, object->n_exclusive);
-	ASSERT(list_empty(&op->pend_link));
-
-	ret = -ENOBUFS;
-	if (fscache_object_is_active(object)) {
-		op->object = object;
-		object->n_ops++;
-		object->n_exclusive++;	/* reads and writes must wait */
-
-		if (object->n_ops > 1) {
-			atomic_inc(&op->usage);
-			list_add_tail(&op->pend_link, &object->pending_ops);
-			fscache_stat(&fscache_n_op_pend);
-		} else if (!list_empty(&object->pending_ops)) {
-			atomic_inc(&op->usage);
-			list_add_tail(&op->pend_link, &object->pending_ops);
-			fscache_stat(&fscache_n_op_pend);
-			fscache_start_operations(object);
-		} else {
-			ASSERTCMP(object->n_in_progress, ==, 0);
-			fscache_run_op(object, op);
-		}
-
-		/* need to issue a new write op after this */
-		clear_bit(FSCACHE_OBJECT_PENDING_WRITE, &object->flags);
-		ret = 0;
-	} else if (object->state == FSCACHE_OBJECT_CREATING) {
-		op->object = object;
-		object->n_ops++;
-		object->n_exclusive++;	/* reads and writes must wait */
-		atomic_inc(&op->usage);
-		list_add_tail(&op->pend_link, &object->pending_ops);
-		fscache_stat(&fscache_n_op_pend);
-		ret = 0;
-	} else {
-		/* not allowed to submit ops in any other state */
-		BUG();
-	}
-
-	spin_unlock(&object->lock);
-	return ret;
-}
-
-/*
- * report an unexpected submission
- */
-static void fscache_report_unexpected_submission(struct fscache_object *object,
-						 struct fscache_operation *op,
-						 unsigned long ostate)
-{
-	static bool once_only;
-	struct fscache_operation *p;
-	unsigned n;
-
-	if (once_only)
-		return;
-	once_only = true;
-
-	kdebug("unexpected submission OP%x [OBJ%x %s]",
-	       op->debug_id, object->debug_id,
-	       fscache_object_states[object->state]);
-	kdebug("objstate=%s [%s]",
-	       fscache_object_states[object->state],
-	       fscache_object_states[ostate]);
-	kdebug("objflags=%lx", object->flags);
-	kdebug("objevent=%lx [%lx]", object->events, object->event_mask);
-	kdebug("ops=%u inp=%u exc=%u",
-	       object->n_ops, object->n_in_progress, object->n_exclusive);
-
-	if (!list_empty(&object->pending_ops)) {
-		n = 0;
-		list_for_each_entry(p, &object->pending_ops, pend_link) {
-			ASSERTCMP(p->object, ==, object);
-			kdebug("%p %p", op->processor, op->release);
-			n++;
-		}
-
-		kdebug("n=%u", n);
-	}
-
-	dump_stack();
-}
-
-/*
- * submit an operation for an object
- * - objects may be submitted only in the following states:
- *   - during object creation (write ops may be submitted)
- *   - whilst the object is active
- *   - after an I/O error incurred in one of the two above states (op rejected)
- * - this gets any extra refs it needs on an op
- */
-int fscache_submit_op(struct fscache_object *object,
-		      struct fscache_operation *op)
-{
-	unsigned long ostate;
-	int ret;
-
-	_enter("{OBJ%x OP%x},{%u}",
-	       object->debug_id, op->debug_id, atomic_read(&op->usage));
-
-	ASSERTCMP(atomic_read(&op->usage), >, 0);
-
-	spin_lock(&object->lock);
-	ASSERTCMP(object->n_ops, >=, object->n_in_progress);
-	ASSERTCMP(object->n_ops, >=, object->n_exclusive);
-	ASSERT(list_empty(&op->pend_link));
-
-	ostate = object->state;
-	smp_rmb();
-
-	if (fscache_object_is_active(object)) {
-		op->object = object;
-		object->n_ops++;
-
-		if (object->n_exclusive > 0) {
-			atomic_inc(&op->usage);
-			list_add_tail(&op->pend_link, &object->pending_ops);
-			fscache_stat(&fscache_n_op_pend);
-		} else if (!list_empty(&object->pending_ops)) {
-			atomic_inc(&op->usage);
-			list_add_tail(&op->pend_link, &object->pending_ops);
-			fscache_stat(&fscache_n_op_pend);
-			fscache_start_operations(object);
-		} else {
-			ASSERTCMP(object->n_exclusive, ==, 0);
-			fscache_run_op(object, op);
-		}
-		ret = 0;
-	} else if (object->state == FSCACHE_OBJECT_CREATING) {
-		op->object = object;
-		object->n_ops++;
-		atomic_inc(&op->usage);
-		list_add_tail(&op->pend_link, &object->pending_ops);
-		fscache_stat(&fscache_n_op_pend);
-		ret = 0;
-	} else if (object->state == FSCACHE_OBJECT_DYING ||
-		   object->state == FSCACHE_OBJECT_LC_DYING ||
-		   object->state == FSCACHE_OBJECT_WITHDRAWING) {
-		fscache_stat(&fscache_n_op_rejected);
-		ret = -ENOBUFS;
-	} else if (!test_bit(FSCACHE_IOERROR, &object->cache->flags)) {
-		fscache_report_unexpected_submission(object, op, ostate);
-		ASSERT(!fscache_object_is_active(object));
-		ret = -ENOBUFS;
-	} else {
-		ret = -ENOBUFS;
-	}
-
-	spin_unlock(&object->lock);
-	return ret;
-}
-
-/*
- * queue an object for withdrawal on error, aborting all following asynchronous
- * operations
- */
-void fscache_abort_object(struct fscache_object *object)
-{
-	_enter("{OBJ%x}", object->debug_id);
-
-	fscache_raise_event(object, FSCACHE_OBJECT_EV_ERROR);
-}
-
-/*
- * jump start the operation processing on an object
- * - caller must hold object->lock
- */
-void fscache_start_operations(struct fscache_object *object)
-{
-	struct fscache_operation *op;
-	bool stop = false;
-
-	while (!list_empty(&object->pending_ops) && !stop) {
-		op = list_entry(object->pending_ops.next,
-				struct fscache_operation, pend_link);
-
-		if (test_bit(FSCACHE_OP_EXCLUSIVE, &op->flags)) {
-			if (object->n_in_progress > 0)
-				break;
-			stop = true;
-		}
-		list_del_init(&op->pend_link);
-		fscache_run_op(object, op);
-
-		/* the pending queue was holding a ref on the object */
-		fscache_put_operation(op);
-	}
-
-	ASSERTCMP(object->n_in_progress, <=, object->n_ops);
-
-	_debug("woke %d ops on OBJ%x",
-	       object->n_in_progress, object->debug_id);
-}
-
-/*
- * cancel an operation that's pending on an object
- */
-int fscache_cancel_op(struct fscache_operation *op)
-{
-	struct fscache_object *object = op->object;
-	int ret;
-
-	_enter("OBJ%x OP%x}", op->object->debug_id, op->debug_id);
-
-	spin_lock(&object->lock);
-
-	ret = -EBUSY;
-	if (!list_empty(&op->pend_link)) {
-		fscache_stat(&fscache_n_op_cancelled);
-		list_del_init(&op->pend_link);
-		object->n_ops--;
-		if (test_bit(FSCACHE_OP_EXCLUSIVE, &op->flags))
-			object->n_exclusive--;
-		if (test_and_clear_bit(FSCACHE_OP_WAITING, &op->flags))
-			wake_up_bit(&op->flags, FSCACHE_OP_WAITING);
-		fscache_put_operation(op);
-		ret = 0;
-	}
-
-	spin_unlock(&object->lock);
-	_leave(" = %d", ret);
-	return ret;
-}
-
-/*
- * release an operation
- * - queues pending ops if this is the last in-progress op
- */
-void fscache_put_operation(struct fscache_operation *op)
-{
-	struct fscache_object *object;
-	struct fscache_cache *cache;
-
-	_enter("{OBJ%x OP%x,%d}",
-	       op->object->debug_id, op->debug_id, atomic_read(&op->usage));
-
-	ASSERTCMP(atomic_read(&op->usage), >, 0);
-
-	if (!atomic_dec_and_test(&op->usage))
-		return;
-
-	_debug("PUT OP");
-	if (test_and_set_bit(FSCACHE_OP_DEAD, &op->flags))
-		BUG();
-
-	fscache_stat(&fscache_n_op_release);
-
-	if (op->release) {
-		op->release(op);
-		op->release = NULL;
-	}
-
-	object = op->object;
-
-	if (test_bit(FSCACHE_OP_DEC_READ_CNT, &op->flags))
-		atomic_dec(&object->n_reads);
-
-	/* now... we may get called with the object spinlock held, so we
-	 * complete the cleanup here only if we can immediately acquire the
-	 * lock, and defer it otherwise */
-	if (!spin_trylock(&object->lock)) {
-		_debug("defer put");
-		fscache_stat(&fscache_n_op_deferred_release);
-
-		cache = object->cache;
-		spin_lock(&cache->op_gc_list_lock);
-		list_add_tail(&op->pend_link, &cache->op_gc_list);
-		spin_unlock(&cache->op_gc_list_lock);
-		schedule_work(&cache->op_gc);
-		_leave(" [defer]");
-		return;
-	}
-
-	if (test_bit(FSCACHE_OP_EXCLUSIVE, &op->flags)) {
-		ASSERTCMP(object->n_exclusive, >, 0);
-		object->n_exclusive--;
-	}
-
-	ASSERTCMP(object->n_in_progress, >, 0);
-	object->n_in_progress--;
-	if (object->n_in_progress == 0)
-		fscache_start_operations(object);
-
-	ASSERTCMP(object->n_ops, >, 0);
-	object->n_ops--;
-	if (object->n_ops == 0)
-		fscache_raise_event(object, FSCACHE_OBJECT_EV_CLEARED);
-
-	spin_unlock(&object->lock);
-
-	kfree(op);
-	_leave(" [done]");
-}
-EXPORT_SYMBOL(fscache_put_operation);
-
-/*
- * garbage collect operations that have had their release deferred
- */
-void fscache_operation_gc(struct work_struct *work)
-{
-	struct fscache_operation *op;
-	struct fscache_object *object;
-	struct fscache_cache *cache =
-		container_of(work, struct fscache_cache, op_gc);
-	int count = 0;
-
-	_enter("");
-
-	do {
-		spin_lock(&cache->op_gc_list_lock);
-		if (list_empty(&cache->op_gc_list)) {
-			spin_unlock(&cache->op_gc_list_lock);
-			break;
-		}
-
-		op = list_entry(cache->op_gc_list.next,
-				struct fscache_operation, pend_link);
-		list_del(&op->pend_link);
-		spin_unlock(&cache->op_gc_list_lock);
-
-		object = op->object;
-
-		_debug("GC DEFERRED REL OBJ%x OP%x",
-		       object->debug_id, op->debug_id);
-		fscache_stat(&fscache_n_op_gc);
-
-		ASSERTCMP(atomic_read(&op->usage), ==, 0);
-
-		spin_lock(&object->lock);
-		if (test_bit(FSCACHE_OP_EXCLUSIVE, &op->flags)) {
-			ASSERTCMP(object->n_exclusive, >, 0);
-			object->n_exclusive--;
-		}
-
-		ASSERTCMP(object->n_in_progress, >, 0);
-		object->n_in_progress--;
-		if (object->n_in_progress == 0)
-			fscache_start_operations(object);
-
-		ASSERTCMP(object->n_ops, >, 0);
-		object->n_ops--;
-		if (object->n_ops == 0)
-			fscache_raise_event(object, FSCACHE_OBJECT_EV_CLEARED);
-
-		spin_unlock(&object->lock);
-
-	} while (count++ < 20);
-
-	if (!list_empty(&cache->op_gc_list))
-		schedule_work(&cache->op_gc);
-
-	_leave("");
-}
-
-/*
- * execute an operation using fs_op_wq to provide processing context -
- * the caller holds a ref to this object, so we don't need to hold one
- */
-void fscache_op_work_func(struct work_struct *work)
-{
-	struct fscache_operation *op =
-		container_of(work, struct fscache_operation, work);
-	unsigned long start;
-
-	_enter("{OBJ%x OP%x,%d}",
-	       op->object->debug_id, op->debug_id, atomic_read(&op->usage));
-
-	ASSERT(op->processor != NULL);
-	start = jiffies;
-	op->processor(op);
-	fscache_hist(fscache_ops_histogram, start);
-	fscache_put_operation(op);
-
-	_leave("");
-}
diff --git a/ANDROID_3.4.5/fs/fscache/page.c b/ANDROID_3.4.5/fs/fscache/page.c
deleted file mode 100644
index 3f7a59bf..00000000
--- a/ANDROID_3.4.5/fs/fscache/page.c
+++ /dev/null
@@ -1,996 +0,0 @@
-/* Cache page management and data I/O routines
- *
- * Copyright (C) 2004-2008 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#define FSCACHE_DEBUG_LEVEL PAGE
-#include <linux/module.h>
-#include <linux/fscache-cache.h>
-#include <linux/buffer_head.h>
-#include <linux/pagevec.h>
-#include <linux/slab.h>
-#include "internal.h"
-
-/*
- * check to see if a page is being written to the cache
- */
-bool __fscache_check_page_write(struct fscache_cookie *cookie, struct page *page)
-{
-	void *val;
-
-	rcu_read_lock();
-	val = radix_tree_lookup(&cookie->stores, page->index);
-	rcu_read_unlock();
-
-	return val != NULL;
-}
-EXPORT_SYMBOL(__fscache_check_page_write);
-
-/*
- * wait for a page to finish being written to the cache
- */
-void __fscache_wait_on_page_write(struct fscache_cookie *cookie, struct page *page)
-{
-	wait_queue_head_t *wq = bit_waitqueue(&cookie->flags, 0);
-
-	wait_event(*wq, !__fscache_check_page_write(cookie, page));
-}
-EXPORT_SYMBOL(__fscache_wait_on_page_write);
-
-/*
- * decide whether a page can be released, possibly by cancelling a store to it
- * - we're allowed to sleep if __GFP_WAIT is flagged
- */
-bool __fscache_maybe_release_page(struct fscache_cookie *cookie,
-				  struct page *page,
-				  gfp_t gfp)
-{
-	struct page *xpage;
-	void *val;
-
-	_enter("%p,%p,%x", cookie, page, gfp);
-
-	rcu_read_lock();
-	val = radix_tree_lookup(&cookie->stores, page->index);
-	if (!val) {
-		rcu_read_unlock();
-		fscache_stat(&fscache_n_store_vmscan_not_storing);
-		__fscache_uncache_page(cookie, page);
-		return true;
-	}
-
-	/* see if the page is actually undergoing storage - if so we can't get
-	 * rid of it till the cache has finished with it */
-	if (radix_tree_tag_get(&cookie->stores, page->index,
-			       FSCACHE_COOKIE_STORING_TAG)) {
-		rcu_read_unlock();
-		goto page_busy;
-	}
-
-	/* the page is pending storage, so we attempt to cancel the store and
-	 * discard the store request so that the page can be reclaimed */
-	spin_lock(&cookie->stores_lock);
-	rcu_read_unlock();
-
-	if (radix_tree_tag_get(&cookie->stores, page->index,
-			       FSCACHE_COOKIE_STORING_TAG)) {
-		/* the page started to undergo storage whilst we were looking,
-		 * so now we can only wait or return */
-		spin_unlock(&cookie->stores_lock);
-		goto page_busy;
-	}
-
-	xpage = radix_tree_delete(&cookie->stores, page->index);
-	spin_unlock(&cookie->stores_lock);
-
-	if (xpage) {
-		fscache_stat(&fscache_n_store_vmscan_cancelled);
-		fscache_stat(&fscache_n_store_radix_deletes);
-		ASSERTCMP(xpage, ==, page);
-	} else {
-		fscache_stat(&fscache_n_store_vmscan_gone);
-	}
-
-	wake_up_bit(&cookie->flags, 0);
-	if (xpage)
-		page_cache_release(xpage);
-	__fscache_uncache_page(cookie, page);
-	return true;
-
-page_busy:
-	/* we might want to wait here, but that could deadlock the allocator as
-	 * the work threads writing to the cache may all end up sleeping
-	 * on memory allocation */
-	fscache_stat(&fscache_n_store_vmscan_busy);
-	return false;
-}
-EXPORT_SYMBOL(__fscache_maybe_release_page);
-
-/*
- * note that a page has finished being written to the cache
- */
-static void fscache_end_page_write(struct fscache_object *object,
-				   struct page *page)
-{
-	struct fscache_cookie *cookie;
-	struct page *xpage = NULL;
-
-	spin_lock(&object->lock);
-	cookie = object->cookie;
-	if (cookie) {
-		/* delete the page from the tree if it is now no longer
-		 * pending */
-		spin_lock(&cookie->stores_lock);
-		radix_tree_tag_clear(&cookie->stores, page->index,
-				     FSCACHE_COOKIE_STORING_TAG);
-		if (!radix_tree_tag_get(&cookie->stores, page->index,
-					FSCACHE_COOKIE_PENDING_TAG)) {
-			fscache_stat(&fscache_n_store_radix_deletes);
-			xpage = radix_tree_delete(&cookie->stores, page->index);
-		}
-		spin_unlock(&cookie->stores_lock);
-		wake_up_bit(&cookie->flags, 0);
-	}
-	spin_unlock(&object->lock);
-	if (xpage)
-		page_cache_release(xpage);
-}
-
-/*
- * actually apply the changed attributes to a cache object
- */
-static void fscache_attr_changed_op(struct fscache_operation *op)
-{
-	struct fscache_object *object = op->object;
-	int ret;
-
-	_enter("{OBJ%x OP%x}", object->debug_id, op->debug_id);
-
-	fscache_stat(&fscache_n_attr_changed_calls);
-
-	if (fscache_object_is_active(object)) {
-		fscache_stat(&fscache_n_cop_attr_changed);
-		ret = object->cache->ops->attr_changed(object);
-		fscache_stat_d(&fscache_n_cop_attr_changed);
-		if (ret < 0)
-			fscache_abort_object(object);
-	}
-
-	_leave("");
-}
-
-/*
- * notification that the attributes on an object have changed
- */
-int __fscache_attr_changed(struct fscache_cookie *cookie)
-{
-	struct fscache_operation *op;
-	struct fscache_object *object;
-
-	_enter("%p", cookie);
-
-	ASSERTCMP(cookie->def->type, !=, FSCACHE_COOKIE_TYPE_INDEX);
-
-	fscache_stat(&fscache_n_attr_changed);
-
-	op = kzalloc(sizeof(*op), GFP_KERNEL);
-	if (!op) {
-		fscache_stat(&fscache_n_attr_changed_nomem);
-		_leave(" = -ENOMEM");
-		return -ENOMEM;
-	}
-
-	fscache_operation_init(op, fscache_attr_changed_op, NULL);
-	op->flags = FSCACHE_OP_ASYNC | (1 << FSCACHE_OP_EXCLUSIVE);
-
-	spin_lock(&cookie->lock);
-
-	if (hlist_empty(&cookie->backing_objects))
-		goto nobufs;
-	object = hlist_entry(cookie->backing_objects.first,
-			     struct fscache_object, cookie_link);
-
-	if (fscache_submit_exclusive_op(object, op) < 0)
-		goto nobufs;
-	spin_unlock(&cookie->lock);
-	fscache_stat(&fscache_n_attr_changed_ok);
-	fscache_put_operation(op);
-	_leave(" = 0");
-	return 0;
-
-nobufs:
-	spin_unlock(&cookie->lock);
-	kfree(op);
-	fscache_stat(&fscache_n_attr_changed_nobufs);
-	_leave(" = %d", -ENOBUFS);
-	return -ENOBUFS;
-}
-EXPORT_SYMBOL(__fscache_attr_changed);
-
-/*
- * release a retrieval op reference
- */
-static void fscache_release_retrieval_op(struct fscache_operation *_op)
-{
-	struct fscache_retrieval *op =
-		container_of(_op, struct fscache_retrieval, op);
-
-	_enter("{OP%x}", op->op.debug_id);
-
-	fscache_hist(fscache_retrieval_histogram, op->start_time);
-	if (op->context)
-		fscache_put_context(op->op.object->cookie, op->context);
-
-	_leave("");
-}
-
-/*
- * allocate a retrieval op
- */
-static struct fscache_retrieval *fscache_alloc_retrieval(
-	struct address_space *mapping,
-	fscache_rw_complete_t end_io_func,
-	void *context)
-{
-	struct fscache_retrieval *op;
-
-	/* allocate a retrieval operation and attempt to submit it */
-	op = kzalloc(sizeof(*op), GFP_NOIO);
-	if (!op) {
-		fscache_stat(&fscache_n_retrievals_nomem);
-		return NULL;
-	}
-
-	fscache_operation_init(&op->op, NULL, fscache_release_retrieval_op);
-	op->op.flags	= FSCACHE_OP_MYTHREAD | (1 << FSCACHE_OP_WAITING);
-	op->mapping	= mapping;
-	op->end_io_func	= end_io_func;
-	op->context	= context;
-	op->start_time	= jiffies;
-	INIT_LIST_HEAD(&op->to_do);
-	return op;
-}
-
-/*
- * wait for a deferred lookup to complete
- */
-static int fscache_wait_for_deferred_lookup(struct fscache_cookie *cookie)
-{
-	unsigned long jif;
-
-	_enter("");
-
-	if (!test_bit(FSCACHE_COOKIE_LOOKING_UP, &cookie->flags)) {
-		_leave(" = 0 [imm]");
-		return 0;
-	}
-
-	fscache_stat(&fscache_n_retrievals_wait);
-
-	jif = jiffies;
-	if (wait_on_bit(&cookie->flags, FSCACHE_COOKIE_LOOKING_UP,
-			fscache_wait_bit_interruptible,
-			TASK_INTERRUPTIBLE) != 0) {
-		fscache_stat(&fscache_n_retrievals_intr);
-		_leave(" = -ERESTARTSYS");
-		return -ERESTARTSYS;
-	}
-
-	ASSERT(!test_bit(FSCACHE_COOKIE_LOOKING_UP, &cookie->flags));
-
-	smp_rmb();
-	fscache_hist(fscache_retrieval_delay_histogram, jif);
-	_leave(" = 0 [dly]");
-	return 0;
-}
-
-/*
- * wait for an object to become active (or dead)
- */
-static int fscache_wait_for_retrieval_activation(struct fscache_object *object,
-						 struct fscache_retrieval *op,
-						 atomic_t *stat_op_waits,
-						 atomic_t *stat_object_dead)
-{
-	int ret;
-
-	if (!test_bit(FSCACHE_OP_WAITING, &op->op.flags))
-		goto check_if_dead;
-
-	_debug(">>> WT");
-	fscache_stat(stat_op_waits);
-	if (wait_on_bit(&op->op.flags, FSCACHE_OP_WAITING,
-			fscache_wait_bit_interruptible,
-			TASK_INTERRUPTIBLE) < 0) {
-		ret = fscache_cancel_op(&op->op);
-		if (ret == 0)
-			return -ERESTARTSYS;
-
-		/* it's been removed from the pending queue by another party,
-		 * so we should get to run shortly */
-		wait_on_bit(&op->op.flags, FSCACHE_OP_WAITING,
-			    fscache_wait_bit, TASK_UNINTERRUPTIBLE);
-	}
-	_debug("<<< GO");
-
-check_if_dead:
-	if (unlikely(fscache_object_is_dead(object))) {
-		fscache_stat(stat_object_dead);
-		return -ENOBUFS;
-	}
-	return 0;
-}
-
-/*
- * read a page from the cache or allocate a block in which to store it
- * - we return:
- *   -ENOMEM	- out of memory, nothing done
- *   -ERESTARTSYS - interrupted
- *   -ENOBUFS	- no backing object available in which to cache the block
- *   -ENODATA	- no data available in the backing object for this block
- *   0		- dispatched a read - it'll call end_io_func() when finished
- */
-int __fscache_read_or_alloc_page(struct fscache_cookie *cookie,
-				 struct page *page,
-				 fscache_rw_complete_t end_io_func,
-				 void *context,
-				 gfp_t gfp)
-{
-	struct fscache_retrieval *op;
-	struct fscache_object *object;
-	int ret;
-
-	_enter("%p,%p,,,", cookie, page);
-
-	fscache_stat(&fscache_n_retrievals);
-
-	if (hlist_empty(&cookie->backing_objects))
-		goto nobufs;
-
-	ASSERTCMP(cookie->def->type, !=, FSCACHE_COOKIE_TYPE_INDEX);
-	ASSERTCMP(page, !=, NULL);
-
-	if (fscache_wait_for_deferred_lookup(cookie) < 0)
-		return -ERESTARTSYS;
-
-	op = fscache_alloc_retrieval(page->mapping, end_io_func, context);
-	if (!op) {
-		_leave(" = -ENOMEM");
-		return -ENOMEM;
-	}
-
-	spin_lock(&cookie->lock);
-
-	if (hlist_empty(&cookie->backing_objects))
-		goto nobufs_unlock;
-	object = hlist_entry(cookie->backing_objects.first,
-			     struct fscache_object, cookie_link);
-
-	ASSERTCMP(object->state, >, FSCACHE_OBJECT_LOOKING_UP);
-
-	atomic_inc(&object->n_reads);
-	set_bit(FSCACHE_OP_DEC_READ_CNT, &op->op.flags);
-
-	if (fscache_submit_op(object, &op->op) < 0)
-		goto nobufs_unlock;
-	spin_unlock(&cookie->lock);
-
-	fscache_stat(&fscache_n_retrieval_ops);
-
-	/* pin the netfs read context in case we need to do the actual netfs
-	 * read because we've encountered a cache read failure */
-	fscache_get_context(object->cookie, op->context);
-
-	/* we wait for the operation to become active, and then process it
-	 * *here*, in this thread, and not in the thread pool */
-	ret = fscache_wait_for_retrieval_activation(
-		object, op,
-		__fscache_stat(&fscache_n_retrieval_op_waits),
-		__fscache_stat(&fscache_n_retrievals_object_dead));
-	if (ret < 0)
-		goto error;
-
-	/* ask the cache to honour the operation */
-	if (test_bit(FSCACHE_COOKIE_NO_DATA_YET, &object->cookie->flags)) {
-		fscache_stat(&fscache_n_cop_allocate_page);
-		ret = object->cache->ops->allocate_page(op, page, gfp);
-		fscache_stat_d(&fscache_n_cop_allocate_page);
-		if (ret == 0)
-			ret = -ENODATA;
-	} else {
-		fscache_stat(&fscache_n_cop_read_or_alloc_page);
-		ret = object->cache->ops->read_or_alloc_page(op, page, gfp);
-		fscache_stat_d(&fscache_n_cop_read_or_alloc_page);
-	}
-
-error:
-	if (ret == -ENOMEM)
-		fscache_stat(&fscache_n_retrievals_nomem);
-	else if (ret == -ERESTARTSYS)
-		fscache_stat(&fscache_n_retrievals_intr);
-	else if (ret == -ENODATA)
-		fscache_stat(&fscache_n_retrievals_nodata);
-	else if (ret < 0)
-		fscache_stat(&fscache_n_retrievals_nobufs);
-	else
-		fscache_stat(&fscache_n_retrievals_ok);
-
-	fscache_put_retrieval(op);
-	_leave(" = %d", ret);
-	return ret;
-
-nobufs_unlock:
-	spin_unlock(&cookie->lock);
-	kfree(op);
-nobufs:
-	fscache_stat(&fscache_n_retrievals_nobufs);
-	_leave(" = -ENOBUFS");
-	return -ENOBUFS;
-}
-EXPORT_SYMBOL(__fscache_read_or_alloc_page);
-
-/*
- * read a list of page from the cache or allocate a block in which to store
- * them
- * - we return:
- *   -ENOMEM	- out of memory, some pages may be being read
- *   -ERESTARTSYS - interrupted, some pages may be being read
- *   -ENOBUFS	- no backing object or space available in which to cache any
- *                pages not being read
- *   -ENODATA	- no data available in the backing object for some or all of
- *                the pages
- *   0		- dispatched a read on all pages
- *
- * end_io_func() will be called for each page read from the cache as it is
- * finishes being read
- *
- * any pages for which a read is dispatched will be removed from pages and
- * nr_pages
- */
-int __fscache_read_or_alloc_pages(struct fscache_cookie *cookie,
-				  struct address_space *mapping,
-				  struct list_head *pages,
-				  unsigned *nr_pages,
-				  fscache_rw_complete_t end_io_func,
-				  void *context,
-				  gfp_t gfp)
-{
-	struct fscache_retrieval *op;
-	struct fscache_object *object;
-	int ret;
-
-	_enter("%p,,%d,,,", cookie, *nr_pages);
-
-	fscache_stat(&fscache_n_retrievals);
-
-	if (hlist_empty(&cookie->backing_objects))
-		goto nobufs;
-
-	ASSERTCMP(cookie->def->type, !=, FSCACHE_COOKIE_TYPE_INDEX);
-	ASSERTCMP(*nr_pages, >, 0);
-	ASSERT(!list_empty(pages));
-
-	if (fscache_wait_for_deferred_lookup(cookie) < 0)
-		return -ERESTARTSYS;
-
-	op = fscache_alloc_retrieval(mapping, end_io_func, context);
-	if (!op)
-		return -ENOMEM;
-
-	spin_lock(&cookie->lock);
-
-	if (hlist_empty(&cookie->backing_objects))
-		goto nobufs_unlock;
-	object = hlist_entry(cookie->backing_objects.first,
-			     struct fscache_object, cookie_link);
-
-	atomic_inc(&object->n_reads);
-	set_bit(FSCACHE_OP_DEC_READ_CNT, &op->op.flags);
-
-	if (fscache_submit_op(object, &op->op) < 0)
-		goto nobufs_unlock;
-	spin_unlock(&cookie->lock);
-
-	fscache_stat(&fscache_n_retrieval_ops);
-
-	/* pin the netfs read context in case we need to do the actual netfs
-	 * read because we've encountered a cache read failure */
-	fscache_get_context(object->cookie, op->context);
-
-	/* we wait for the operation to become active, and then process it
-	 * *here*, in this thread, and not in the thread pool */
-	ret = fscache_wait_for_retrieval_activation(
-		object, op,
-		__fscache_stat(&fscache_n_retrieval_op_waits),
-		__fscache_stat(&fscache_n_retrievals_object_dead));
-	if (ret < 0)
-		goto error;
-
-	/* ask the cache to honour the operation */
-	if (test_bit(FSCACHE_COOKIE_NO_DATA_YET, &object->cookie->flags)) {
-		fscache_stat(&fscache_n_cop_allocate_pages);
-		ret = object->cache->ops->allocate_pages(
-			op, pages, nr_pages, gfp);
-		fscache_stat_d(&fscache_n_cop_allocate_pages);
-	} else {
-		fscache_stat(&fscache_n_cop_read_or_alloc_pages);
-		ret = object->cache->ops->read_or_alloc_pages(
-			op, pages, nr_pages, gfp);
-		fscache_stat_d(&fscache_n_cop_read_or_alloc_pages);
-	}
-
-error:
-	if (ret == -ENOMEM)
-		fscache_stat(&fscache_n_retrievals_nomem);
-	else if (ret == -ERESTARTSYS)
-		fscache_stat(&fscache_n_retrievals_intr);
-	else if (ret == -ENODATA)
-		fscache_stat(&fscache_n_retrievals_nodata);
-	else if (ret < 0)
-		fscache_stat(&fscache_n_retrievals_nobufs);
-	else
-		fscache_stat(&fscache_n_retrievals_ok);
-
-	fscache_put_retrieval(op);
-	_leave(" = %d", ret);
-	return ret;
-
-nobufs_unlock:
-	spin_unlock(&cookie->lock);
-	kfree(op);
-nobufs:
-	fscache_stat(&fscache_n_retrievals_nobufs);
-	_leave(" = -ENOBUFS");
-	return -ENOBUFS;
-}
-EXPORT_SYMBOL(__fscache_read_or_alloc_pages);
-
-/*
- * allocate a block in the cache on which to store a page
- * - we return:
- *   -ENOMEM	- out of memory, nothing done
- *   -ERESTARTSYS - interrupted
- *   -ENOBUFS	- no backing object available in which to cache the block
- *   0		- block allocated
- */
-int __fscache_alloc_page(struct fscache_cookie *cookie,
-			 struct page *page,
-			 gfp_t gfp)
-{
-	struct fscache_retrieval *op;
-	struct fscache_object *object;
-	int ret;
-
-	_enter("%p,%p,,,", cookie, page);
-
-	fscache_stat(&fscache_n_allocs);
-
-	if (hlist_empty(&cookie->backing_objects))
-		goto nobufs;
-
-	ASSERTCMP(cookie->def->type, !=, FSCACHE_COOKIE_TYPE_INDEX);
-	ASSERTCMP(page, !=, NULL);
-
-	if (fscache_wait_for_deferred_lookup(cookie) < 0)
-		return -ERESTARTSYS;
-
-	op = fscache_alloc_retrieval(page->mapping, NULL, NULL);
-	if (!op)
-		return -ENOMEM;
-
-	spin_lock(&cookie->lock);
-
-	if (hlist_empty(&cookie->backing_objects))
-		goto nobufs_unlock;
-	object = hlist_entry(cookie->backing_objects.first,
-			     struct fscache_object, cookie_link);
-
-	if (fscache_submit_op(object, &op->op) < 0)
-		goto nobufs_unlock;
-	spin_unlock(&cookie->lock);
-
-	fscache_stat(&fscache_n_alloc_ops);
-
-	ret = fscache_wait_for_retrieval_activation(
-		object, op,
-		__fscache_stat(&fscache_n_alloc_op_waits),
-		__fscache_stat(&fscache_n_allocs_object_dead));
-	if (ret < 0)
-		goto error;
-
-	/* ask the cache to honour the operation */
-	fscache_stat(&fscache_n_cop_allocate_page);
-	ret = object->cache->ops->allocate_page(op, page, gfp);
-	fscache_stat_d(&fscache_n_cop_allocate_page);
-
-error:
-	if (ret == -ERESTARTSYS)
-		fscache_stat(&fscache_n_allocs_intr);
-	else if (ret < 0)
-		fscache_stat(&fscache_n_allocs_nobufs);
-	else
-		fscache_stat(&fscache_n_allocs_ok);
-
-	fscache_put_retrieval(op);
-	_leave(" = %d", ret);
-	return ret;
-
-nobufs_unlock:
-	spin_unlock(&cookie->lock);
-	kfree(op);
-nobufs:
-	fscache_stat(&fscache_n_allocs_nobufs);
-	_leave(" = -ENOBUFS");
-	return -ENOBUFS;
-}
-EXPORT_SYMBOL(__fscache_alloc_page);
-
-/*
- * release a write op reference
- */
-static void fscache_release_write_op(struct fscache_operation *_op)
-{
-	_enter("{OP%x}", _op->debug_id);
-}
-
-/*
- * perform the background storage of a page into the cache
- */
-static void fscache_write_op(struct fscache_operation *_op)
-{
-	struct fscache_storage *op =
-		container_of(_op, struct fscache_storage, op);
-	struct fscache_object *object = op->op.object;
-	struct fscache_cookie *cookie;
-	struct page *page;
-	unsigned n;
-	void *results[1];
-	int ret;
-
-	_enter("{OP%x,%d}", op->op.debug_id, atomic_read(&op->op.usage));
-
-	spin_lock(&object->lock);
-	cookie = object->cookie;
-
-	if (!fscache_object_is_active(object) || !cookie) {
-		spin_unlock(&object->lock);
-		_leave("");
-		return;
-	}
-
-	spin_lock(&cookie->stores_lock);
-
-	fscache_stat(&fscache_n_store_calls);
-
-	/* find a page to store */
-	page = NULL;
-	n = radix_tree_gang_lookup_tag(&cookie->stores, results, 0, 1,
-				       FSCACHE_COOKIE_PENDING_TAG);
-	if (n != 1)
-		goto superseded;
-	page = results[0];
-	_debug("gang %d [%lx]", n, page->index);
-	if (page->index > op->store_limit) {
-		fscache_stat(&fscache_n_store_pages_over_limit);
-		goto superseded;
-	}
-
-	radix_tree_tag_set(&cookie->stores, page->index,
-			   FSCACHE_COOKIE_STORING_TAG);
-	radix_tree_tag_clear(&cookie->stores, page->index,
-			     FSCACHE_COOKIE_PENDING_TAG);
-
-	spin_unlock(&cookie->stores_lock);
-	spin_unlock(&object->lock);
-
-	fscache_stat(&fscache_n_store_pages);
-	fscache_stat(&fscache_n_cop_write_page);
-	ret = object->cache->ops->write_page(op, page);
-	fscache_stat_d(&fscache_n_cop_write_page);
-	fscache_end_page_write(object, page);
-	if (ret < 0) {
-		fscache_abort_object(object);
-	} else {
-		fscache_enqueue_operation(&op->op);
-	}
-
-	_leave("");
-	return;
-
-superseded:
-	/* this writer is going away and there aren't any more things to
-	 * write */
-	_debug("cease");
-	spin_unlock(&cookie->stores_lock);
-	clear_bit(FSCACHE_OBJECT_PENDING_WRITE, &object->flags);
-	spin_unlock(&object->lock);
-	_leave("");
-}
-
-/*
- * request a page be stored in the cache
- * - returns:
- *   -ENOMEM	- out of memory, nothing done
- *   -ENOBUFS	- no backing object available in which to cache the page
- *   0		- dispatched a write - it'll call end_io_func() when finished
- *
- * if the cookie still has a backing object at this point, that object can be
- * in one of a few states with respect to storage processing:
- *
- *  (1) negative lookup, object not yet created (FSCACHE_COOKIE_CREATING is
- *      set)
- *
- *	(a) no writes yet (set FSCACHE_COOKIE_PENDING_FILL and queue deferred
- *	    fill op)
- *
- *	(b) writes deferred till post-creation (mark page for writing and
- *	    return immediately)
- *
- *  (2) negative lookup, object created, initial fill being made from netfs
- *      (FSCACHE_COOKIE_INITIAL_FILL is set)
- *
- *	(a) fill point not yet reached this page (mark page for writing and
- *          return)
- *
- *	(b) fill point passed this page (queue op to store this page)
- *
- *  (3) object extant (queue op to store this page)
- *
- * any other state is invalid
- */
-int __fscache_write_page(struct fscache_cookie *cookie,
-			 struct page *page,
-			 gfp_t gfp)
-{
-	struct fscache_storage *op;
-	struct fscache_object *object;
-	int ret;
-
-	_enter("%p,%x,", cookie, (u32) page->flags);
-
-	ASSERTCMP(cookie->def->type, !=, FSCACHE_COOKIE_TYPE_INDEX);
-	ASSERT(PageFsCache(page));
-
-	fscache_stat(&fscache_n_stores);
-
-	op = kzalloc(sizeof(*op), GFP_NOIO);
-	if (!op)
-		goto nomem;
-
-	fscache_operation_init(&op->op, fscache_write_op,
-			       fscache_release_write_op);
-	op->op.flags = FSCACHE_OP_ASYNC | (1 << FSCACHE_OP_WAITING);
-
-	ret = radix_tree_preload(gfp & ~__GFP_HIGHMEM);
-	if (ret < 0)
-		goto nomem_free;
-
-	ret = -ENOBUFS;
-	spin_lock(&cookie->lock);
-
-	if (hlist_empty(&cookie->backing_objects))
-		goto nobufs;
-	object = hlist_entry(cookie->backing_objects.first,
-			     struct fscache_object, cookie_link);
-	if (test_bit(FSCACHE_IOERROR, &object->cache->flags))
-		goto nobufs;
-
-	/* add the page to the pending-storage radix tree on the backing
-	 * object */
-	spin_lock(&object->lock);
-	spin_lock(&cookie->stores_lock);
-
-	_debug("store limit %llx", (unsigned long long) object->store_limit);
-
-	ret = radix_tree_insert(&cookie->stores, page->index, page);
-	if (ret < 0) {
-		if (ret == -EEXIST)
-			goto already_queued;
-		_debug("insert failed %d", ret);
-		goto nobufs_unlock_obj;
-	}
-
-	radix_tree_tag_set(&cookie->stores, page->index,
-			   FSCACHE_COOKIE_PENDING_TAG);
-	page_cache_get(page);
-
-	/* we only want one writer at a time, but we do need to queue new
-	 * writers after exclusive ops */
-	if (test_and_set_bit(FSCACHE_OBJECT_PENDING_WRITE, &object->flags))
-		goto already_pending;
-
-	spin_unlock(&cookie->stores_lock);
-	spin_unlock(&object->lock);
-
-	op->op.debug_id	= atomic_inc_return(&fscache_op_debug_id);
-	op->store_limit = object->store_limit;
-
-	if (fscache_submit_op(object, &op->op) < 0)
-		goto submit_failed;
-
-	spin_unlock(&cookie->lock);
-	radix_tree_preload_end();
-	fscache_stat(&fscache_n_store_ops);
-	fscache_stat(&fscache_n_stores_ok);
-
-	/* the work queue now carries its own ref on the object */
-	fscache_put_operation(&op->op);
-	_leave(" = 0");
-	return 0;
-
-already_queued:
-	fscache_stat(&fscache_n_stores_again);
-already_pending:
-	spin_unlock(&cookie->stores_lock);
-	spin_unlock(&object->lock);
-	spin_unlock(&cookie->lock);
-	radix_tree_preload_end();
-	kfree(op);
-	fscache_stat(&fscache_n_stores_ok);
-	_leave(" = 0");
-	return 0;
-
-submit_failed:
-	spin_lock(&cookie->stores_lock);
-	radix_tree_delete(&cookie->stores, page->index);
-	spin_unlock(&cookie->stores_lock);
-	page_cache_release(page);
-	ret = -ENOBUFS;
-	goto nobufs;
-
-nobufs_unlock_obj:
-	spin_unlock(&cookie->stores_lock);
-	spin_unlock(&object->lock);
-nobufs:
-	spin_unlock(&cookie->lock);
-	radix_tree_preload_end();
-	kfree(op);
-	fscache_stat(&fscache_n_stores_nobufs);
-	_leave(" = -ENOBUFS");
-	return -ENOBUFS;
-
-nomem_free:
-	kfree(op);
-nomem:
-	fscache_stat(&fscache_n_stores_oom);
-	_leave(" = -ENOMEM");
-	return -ENOMEM;
-}
-EXPORT_SYMBOL(__fscache_write_page);
-
-/*
- * remove a page from the cache
- */
-void __fscache_uncache_page(struct fscache_cookie *cookie, struct page *page)
-{
-	struct fscache_object *object;
-
-	_enter(",%p", page);
-
-	ASSERTCMP(cookie->def->type, !=, FSCACHE_COOKIE_TYPE_INDEX);
-	ASSERTCMP(page, !=, NULL);
-
-	fscache_stat(&fscache_n_uncaches);
-
-	/* cache withdrawal may beat us to it */
-	if (!PageFsCache(page))
-		goto done;
-
-	/* get the object */
-	spin_lock(&cookie->lock);
-
-	if (hlist_empty(&cookie->backing_objects)) {
-		ClearPageFsCache(page);
-		goto done_unlock;
-	}
-
-	object = hlist_entry(cookie->backing_objects.first,
-			     struct fscache_object, cookie_link);
-
-	/* there might now be stuff on disk we could read */
-	clear_bit(FSCACHE_COOKIE_NO_DATA_YET, &cookie->flags);
-
-	/* only invoke the cache backend if we managed to mark the page
-	 * uncached here; this deals with synchronisation vs withdrawal */
-	if (TestClearPageFsCache(page) &&
-	    object->cache->ops->uncache_page) {
-		/* the cache backend releases the cookie lock */
-		fscache_stat(&fscache_n_cop_uncache_page);
-		object->cache->ops->uncache_page(object, page);
-		fscache_stat_d(&fscache_n_cop_uncache_page);
-		goto done;
-	}
-
-done_unlock:
-	spin_unlock(&cookie->lock);
-done:
-	_leave("");
-}
-EXPORT_SYMBOL(__fscache_uncache_page);
-
-/**
- * fscache_mark_pages_cached - Mark pages as being cached
- * @op: The retrieval op pages are being marked for
- * @pagevec: The pages to be marked
- *
- * Mark a bunch of netfs pages as being cached.  After this is called,
- * the netfs must call fscache_uncache_page() to remove the mark.
- */
-void fscache_mark_pages_cached(struct fscache_retrieval *op,
-			       struct pagevec *pagevec)
-{
-	struct fscache_cookie *cookie = op->op.object->cookie;
-	unsigned long loop;
-
-#ifdef CONFIG_FSCACHE_STATS
-	atomic_add(pagevec->nr, &fscache_n_marks);
-#endif
-
-	for (loop = 0; loop < pagevec->nr; loop++) {
-		struct page *page = pagevec->pages[loop];
-
-		_debug("- mark %p{%lx}", page, page->index);
-		if (TestSetPageFsCache(page)) {
-			static bool once_only;
-			if (!once_only) {
-				once_only = true;
-				printk(KERN_WARNING "FS-Cache:"
-				       " Cookie type %s marked page %lx"
-				       " multiple times\n",
-				       cookie->def->name, page->index);
-			}
-		}
-	}
-
-	if (cookie->def->mark_pages_cached)
-		cookie->def->mark_pages_cached(cookie->netfs_data,
-					       op->mapping, pagevec);
-	pagevec_reinit(pagevec);
-}
-EXPORT_SYMBOL(fscache_mark_pages_cached);
-
-/*
- * Uncache all the pages in an inode that are marked PG_fscache, assuming them
- * to be associated with the given cookie.
- */
-void __fscache_uncache_all_inode_pages(struct fscache_cookie *cookie,
-				       struct inode *inode)
-{
-	struct address_space *mapping = inode->i_mapping;
-	struct pagevec pvec;
-	pgoff_t next;
-	int i;
-
-	_enter("%p,%p", cookie, inode);
-
-	if (!mapping || mapping->nrpages == 0) {
-		_leave(" [no pages]");
-		return;
-	}
-
-	pagevec_init(&pvec, 0);
-	next = 0;
-	do {
-		if (!pagevec_lookup(&pvec, mapping, next, PAGEVEC_SIZE))
-			break;
-		for (i = 0; i < pagevec_count(&pvec); i++) {
-			struct page *page = pvec.pages[i];
-			next = page->index;
-			if (PageFsCache(page)) {
-				__fscache_wait_on_page_write(cookie, page);
-				__fscache_uncache_page(cookie, page);
-			}
-		}
-		pagevec_release(&pvec);
-		cond_resched();
-	} while (++next);
-
-	_leave("");
-}
-EXPORT_SYMBOL(__fscache_uncache_all_inode_pages);
diff --git a/ANDROID_3.4.5/fs/fscache/proc.c b/ANDROID_3.4.5/fs/fscache/proc.c
deleted file mode 100644
index 1d9e4951..00000000
--- a/ANDROID_3.4.5/fs/fscache/proc.c
+++ /dev/null
@@ -1,81 +0,0 @@
-/* FS-Cache statistics viewing interface
- *
- * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#define FSCACHE_DEBUG_LEVEL OPERATION
-#include <linux/module.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include "internal.h"
-
-/*
- * initialise the /proc/fs/fscache/ directory
- */
-int __init fscache_proc_init(void)
-{
-	_enter("");
-
-	if (!proc_mkdir("fs/fscache", NULL))
-		goto error_dir;
-
-#ifdef CONFIG_FSCACHE_STATS
-	if (!proc_create("fs/fscache/stats", S_IFREG | 0444, NULL,
-			 &fscache_stats_fops))
-		goto error_stats;
-#endif
-
-#ifdef CONFIG_FSCACHE_HISTOGRAM
-	if (!proc_create("fs/fscache/histogram", S_IFREG | 0444, NULL,
-			 &fscache_histogram_fops))
-		goto error_histogram;
-#endif
-
-#ifdef CONFIG_FSCACHE_OBJECT_LIST
-	if (!proc_create("fs/fscache/objects", S_IFREG | 0444, NULL,
-			 &fscache_objlist_fops))
-		goto error_objects;
-#endif
-
-	_leave(" = 0");
-	return 0;
-
-#ifdef CONFIG_FSCACHE_OBJECT_LIST
-error_objects:
-#endif
-#ifdef CONFIG_FSCACHE_HISTOGRAM
-	remove_proc_entry("fs/fscache/histogram", NULL);
-error_histogram:
-#endif
-#ifdef CONFIG_FSCACHE_STATS
-	remove_proc_entry("fs/fscache/stats", NULL);
-error_stats:
-#endif
-	remove_proc_entry("fs/fscache", NULL);
-error_dir:
-	_leave(" = -ENOMEM");
-	return -ENOMEM;
-}
-
-/*
- * clean up the /proc/fs/fscache/ directory
- */
-void fscache_proc_cleanup(void)
-{
-#ifdef CONFIG_FSCACHE_OBJECT_LIST
-	remove_proc_entry("fs/fscache/objects", NULL);
-#endif
-#ifdef CONFIG_FSCACHE_HISTOGRAM
-	remove_proc_entry("fs/fscache/histogram", NULL);
-#endif
-#ifdef CONFIG_FSCACHE_STATS
-	remove_proc_entry("fs/fscache/stats", NULL);
-#endif
-	remove_proc_entry("fs/fscache", NULL);
-}
diff --git a/ANDROID_3.4.5/fs/fscache/stats.c b/ANDROID_3.4.5/fs/fscache/stats.c
deleted file mode 100644
index 4765190d..00000000
--- a/ANDROID_3.4.5/fs/fscache/stats.c
+++ /dev/null
@@ -1,280 +0,0 @@
-/* FS-Cache statistics
- *
- * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#define FSCACHE_DEBUG_LEVEL THREAD
-#include <linux/module.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include "internal.h"
-
-/*
- * operation counters
- */
-atomic_t fscache_n_op_pend;
-atomic_t fscache_n_op_run;
-atomic_t fscache_n_op_enqueue;
-atomic_t fscache_n_op_requeue;
-atomic_t fscache_n_op_deferred_release;
-atomic_t fscache_n_op_release;
-atomic_t fscache_n_op_gc;
-atomic_t fscache_n_op_cancelled;
-atomic_t fscache_n_op_rejected;
-
-atomic_t fscache_n_attr_changed;
-atomic_t fscache_n_attr_changed_ok;
-atomic_t fscache_n_attr_changed_nobufs;
-atomic_t fscache_n_attr_changed_nomem;
-atomic_t fscache_n_attr_changed_calls;
-
-atomic_t fscache_n_allocs;
-atomic_t fscache_n_allocs_ok;
-atomic_t fscache_n_allocs_wait;
-atomic_t fscache_n_allocs_nobufs;
-atomic_t fscache_n_allocs_intr;
-atomic_t fscache_n_allocs_object_dead;
-atomic_t fscache_n_alloc_ops;
-atomic_t fscache_n_alloc_op_waits;
-
-atomic_t fscache_n_retrievals;
-atomic_t fscache_n_retrievals_ok;
-atomic_t fscache_n_retrievals_wait;
-atomic_t fscache_n_retrievals_nodata;
-atomic_t fscache_n_retrievals_nobufs;
-atomic_t fscache_n_retrievals_intr;
-atomic_t fscache_n_retrievals_nomem;
-atomic_t fscache_n_retrievals_object_dead;
-atomic_t fscache_n_retrieval_ops;
-atomic_t fscache_n_retrieval_op_waits;
-
-atomic_t fscache_n_stores;
-atomic_t fscache_n_stores_ok;
-atomic_t fscache_n_stores_again;
-atomic_t fscache_n_stores_nobufs;
-atomic_t fscache_n_stores_oom;
-atomic_t fscache_n_store_ops;
-atomic_t fscache_n_store_calls;
-atomic_t fscache_n_store_pages;
-atomic_t fscache_n_store_radix_deletes;
-atomic_t fscache_n_store_pages_over_limit;
-
-atomic_t fscache_n_store_vmscan_not_storing;
-atomic_t fscache_n_store_vmscan_gone;
-atomic_t fscache_n_store_vmscan_busy;
-atomic_t fscache_n_store_vmscan_cancelled;
-
-atomic_t fscache_n_marks;
-atomic_t fscache_n_uncaches;
-
-atomic_t fscache_n_acquires;
-atomic_t fscache_n_acquires_null;
-atomic_t fscache_n_acquires_no_cache;
-atomic_t fscache_n_acquires_ok;
-atomic_t fscache_n_acquires_nobufs;
-atomic_t fscache_n_acquires_oom;
-
-atomic_t fscache_n_updates;
-atomic_t fscache_n_updates_null;
-atomic_t fscache_n_updates_run;
-
-atomic_t fscache_n_relinquishes;
-atomic_t fscache_n_relinquishes_null;
-atomic_t fscache_n_relinquishes_waitcrt;
-atomic_t fscache_n_relinquishes_retire;
-
-atomic_t fscache_n_cookie_index;
-atomic_t fscache_n_cookie_data;
-atomic_t fscache_n_cookie_special;
-
-atomic_t fscache_n_object_alloc;
-atomic_t fscache_n_object_no_alloc;
-atomic_t fscache_n_object_lookups;
-atomic_t fscache_n_object_lookups_negative;
-atomic_t fscache_n_object_lookups_positive;
-atomic_t fscache_n_object_lookups_timed_out;
-atomic_t fscache_n_object_created;
-atomic_t fscache_n_object_avail;
-atomic_t fscache_n_object_dead;
-
-atomic_t fscache_n_checkaux_none;
-atomic_t fscache_n_checkaux_okay;
-atomic_t fscache_n_checkaux_update;
-atomic_t fscache_n_checkaux_obsolete;
-
-atomic_t fscache_n_cop_alloc_object;
-atomic_t fscache_n_cop_lookup_object;
-atomic_t fscache_n_cop_lookup_complete;
-atomic_t fscache_n_cop_grab_object;
-atomic_t fscache_n_cop_update_object;
-atomic_t fscache_n_cop_drop_object;
-atomic_t fscache_n_cop_put_object;
-atomic_t fscache_n_cop_sync_cache;
-atomic_t fscache_n_cop_attr_changed;
-atomic_t fscache_n_cop_read_or_alloc_page;
-atomic_t fscache_n_cop_read_or_alloc_pages;
-atomic_t fscache_n_cop_allocate_page;
-atomic_t fscache_n_cop_allocate_pages;
-atomic_t fscache_n_cop_write_page;
-atomic_t fscache_n_cop_uncache_page;
-atomic_t fscache_n_cop_dissociate_pages;
-
-/*
- * display the general statistics
- */
-static int fscache_stats_show(struct seq_file *m, void *v)
-{
-	seq_puts(m, "FS-Cache statistics\n");
-
-	seq_printf(m, "Cookies: idx=%u dat=%u spc=%u\n",
-		   atomic_read(&fscache_n_cookie_index),
-		   atomic_read(&fscache_n_cookie_data),
-		   atomic_read(&fscache_n_cookie_special));
-
-	seq_printf(m, "Objects: alc=%u nal=%u avl=%u ded=%u\n",
-		   atomic_read(&fscache_n_object_alloc),
-		   atomic_read(&fscache_n_object_no_alloc),
-		   atomic_read(&fscache_n_object_avail),
-		   atomic_read(&fscache_n_object_dead));
-	seq_printf(m, "ChkAux : non=%u ok=%u upd=%u obs=%u\n",
-		   atomic_read(&fscache_n_checkaux_none),
-		   atomic_read(&fscache_n_checkaux_okay),
-		   atomic_read(&fscache_n_checkaux_update),
-		   atomic_read(&fscache_n_checkaux_obsolete));
-
-	seq_printf(m, "Pages  : mrk=%u unc=%u\n",
-		   atomic_read(&fscache_n_marks),
-		   atomic_read(&fscache_n_uncaches));
-
-	seq_printf(m, "Acquire: n=%u nul=%u noc=%u ok=%u nbf=%u"
-		   " oom=%u\n",
-		   atomic_read(&fscache_n_acquires),
-		   atomic_read(&fscache_n_acquires_null),
-		   atomic_read(&fscache_n_acquires_no_cache),
-		   atomic_read(&fscache_n_acquires_ok),
-		   atomic_read(&fscache_n_acquires_nobufs),
-		   atomic_read(&fscache_n_acquires_oom));
-
-	seq_printf(m, "Lookups: n=%u neg=%u pos=%u crt=%u tmo=%u\n",
-		   atomic_read(&fscache_n_object_lookups),
-		   atomic_read(&fscache_n_object_lookups_negative),
-		   atomic_read(&fscache_n_object_lookups_positive),
-		   atomic_read(&fscache_n_object_created),
-		   atomic_read(&fscache_n_object_lookups_timed_out));
-
-	seq_printf(m, "Updates: n=%u nul=%u run=%u\n",
-		   atomic_read(&fscache_n_updates),
-		   atomic_read(&fscache_n_updates_null),
-		   atomic_read(&fscache_n_updates_run));
-
-	seq_printf(m, "Relinqs: n=%u nul=%u wcr=%u rtr=%u\n",
-		   atomic_read(&fscache_n_relinquishes),
-		   atomic_read(&fscache_n_relinquishes_null),
-		   atomic_read(&fscache_n_relinquishes_waitcrt),
-		   atomic_read(&fscache_n_relinquishes_retire));
-
-	seq_printf(m, "AttrChg: n=%u ok=%u nbf=%u oom=%u run=%u\n",
-		   atomic_read(&fscache_n_attr_changed),
-		   atomic_read(&fscache_n_attr_changed_ok),
-		   atomic_read(&fscache_n_attr_changed_nobufs),
-		   atomic_read(&fscache_n_attr_changed_nomem),
-		   atomic_read(&fscache_n_attr_changed_calls));
-
-	seq_printf(m, "Allocs : n=%u ok=%u wt=%u nbf=%u int=%u\n",
-		   atomic_read(&fscache_n_allocs),
-		   atomic_read(&fscache_n_allocs_ok),
-		   atomic_read(&fscache_n_allocs_wait),
-		   atomic_read(&fscache_n_allocs_nobufs),
-		   atomic_read(&fscache_n_allocs_intr));
-	seq_printf(m, "Allocs : ops=%u owt=%u abt=%u\n",
-		   atomic_read(&fscache_n_alloc_ops),
-		   atomic_read(&fscache_n_alloc_op_waits),
-		   atomic_read(&fscache_n_allocs_object_dead));
-
-	seq_printf(m, "Retrvls: n=%u ok=%u wt=%u nod=%u nbf=%u"
-		   " int=%u oom=%u\n",
-		   atomic_read(&fscache_n_retrievals),
-		   atomic_read(&fscache_n_retrievals_ok),
-		   atomic_read(&fscache_n_retrievals_wait),
-		   atomic_read(&fscache_n_retrievals_nodata),
-		   atomic_read(&fscache_n_retrievals_nobufs),
-		   atomic_read(&fscache_n_retrievals_intr),
-		   atomic_read(&fscache_n_retrievals_nomem));
-	seq_printf(m, "Retrvls: ops=%u owt=%u abt=%u\n",
-		   atomic_read(&fscache_n_retrieval_ops),
-		   atomic_read(&fscache_n_retrieval_op_waits),
-		   atomic_read(&fscache_n_retrievals_object_dead));
-
-	seq_printf(m, "Stores : n=%u ok=%u agn=%u nbf=%u oom=%u\n",
-		   atomic_read(&fscache_n_stores),
-		   atomic_read(&fscache_n_stores_ok),
-		   atomic_read(&fscache_n_stores_again),
-		   atomic_read(&fscache_n_stores_nobufs),
-		   atomic_read(&fscache_n_stores_oom));
-	seq_printf(m, "Stores : ops=%u run=%u pgs=%u rxd=%u olm=%u\n",
-		   atomic_read(&fscache_n_store_ops),
-		   atomic_read(&fscache_n_store_calls),
-		   atomic_read(&fscache_n_store_pages),
-		   atomic_read(&fscache_n_store_radix_deletes),
-		   atomic_read(&fscache_n_store_pages_over_limit));
-
-	seq_printf(m, "VmScan : nos=%u gon=%u bsy=%u can=%u\n",
-		   atomic_read(&fscache_n_store_vmscan_not_storing),
-		   atomic_read(&fscache_n_store_vmscan_gone),
-		   atomic_read(&fscache_n_store_vmscan_busy),
-		   atomic_read(&fscache_n_store_vmscan_cancelled));
-
-	seq_printf(m, "Ops    : pend=%u run=%u enq=%u can=%u rej=%u\n",
-		   atomic_read(&fscache_n_op_pend),
-		   atomic_read(&fscache_n_op_run),
-		   atomic_read(&fscache_n_op_enqueue),
-		   atomic_read(&fscache_n_op_cancelled),
-		   atomic_read(&fscache_n_op_rejected));
-	seq_printf(m, "Ops    : dfr=%u rel=%u gc=%u\n",
-		   atomic_read(&fscache_n_op_deferred_release),
-		   atomic_read(&fscache_n_op_release),
-		   atomic_read(&fscache_n_op_gc));
-
-	seq_printf(m, "CacheOp: alo=%d luo=%d luc=%d gro=%d\n",
-		   atomic_read(&fscache_n_cop_alloc_object),
-		   atomic_read(&fscache_n_cop_lookup_object),
-		   atomic_read(&fscache_n_cop_lookup_complete),
-		   atomic_read(&fscache_n_cop_grab_object));
-	seq_printf(m, "CacheOp: upo=%d dro=%d pto=%d atc=%d syn=%d\n",
-		   atomic_read(&fscache_n_cop_update_object),
-		   atomic_read(&fscache_n_cop_drop_object),
-		   atomic_read(&fscache_n_cop_put_object),
-		   atomic_read(&fscache_n_cop_attr_changed),
-		   atomic_read(&fscache_n_cop_sync_cache));
-	seq_printf(m, "CacheOp: rap=%d ras=%d alp=%d als=%d wrp=%d ucp=%d dsp=%d\n",
-		   atomic_read(&fscache_n_cop_read_or_alloc_page),
-		   atomic_read(&fscache_n_cop_read_or_alloc_pages),
-		   atomic_read(&fscache_n_cop_allocate_page),
-		   atomic_read(&fscache_n_cop_allocate_pages),
-		   atomic_read(&fscache_n_cop_write_page),
-		   atomic_read(&fscache_n_cop_uncache_page),
-		   atomic_read(&fscache_n_cop_dissociate_pages));
-	return 0;
-}
-
-/*
- * open "/proc/fs/fscache/stats" allowing provision of a statistical summary
- */
-static int fscache_stats_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, fscache_stats_show, NULL);
-}
-
-const struct file_operations fscache_stats_fops = {
-	.owner		= THIS_MODULE,
-	.open		= fscache_stats_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= seq_release,
-};