Moved, renamed, and deleted files

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

1 files changed, 0 insertions, 667 deletions

diff --git a/ANDROID_3.4.5/include/linux/fscache.h b/ANDROID_3.4.5/include/linux/fscache.h
deleted file mode 100644
index 9ec20dec..00000000
--- a/ANDROID_3.4.5/include/linux/fscache.h
+++ /dev/null
@@ -1,667 +0,0 @@
-/* General filesystem caching interface
- *
- * 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.
- *
- * NOTE!!! See:
- *
- *	Documentation/filesystems/caching/netfs-api.txt
- *
- * for a description of the network filesystem interface declared here.
- */
-
-#ifndef _LINUX_FSCACHE_H
-#define _LINUX_FSCACHE_H
-
-#include <linux/fs.h>
-#include <linux/list.h>
-#include <linux/pagemap.h>
-#include <linux/pagevec.h>
-
-#if defined(CONFIG_FSCACHE) || defined(CONFIG_FSCACHE_MODULE)
-#define fscache_available() (1)
-#define fscache_cookie_valid(cookie) (cookie)
-#else
-#define fscache_available() (0)
-#define fscache_cookie_valid(cookie) (0)
-#endif
-
-
-/*
- * overload PG_private_2 to give us PG_fscache - this is used to indicate that
- * a page is currently backed by a local disk cache
- */
-#define PageFsCache(page)		PagePrivate2((page))
-#define SetPageFsCache(page)		SetPagePrivate2((page))
-#define ClearPageFsCache(page)		ClearPagePrivate2((page))
-#define TestSetPageFsCache(page)	TestSetPagePrivate2((page))
-#define TestClearPageFsCache(page)	TestClearPagePrivate2((page))
-
-/* pattern used to fill dead space in an index entry */
-#define FSCACHE_INDEX_DEADFILL_PATTERN 0x79
-
-struct pagevec;
-struct fscache_cache_tag;
-struct fscache_cookie;
-struct fscache_netfs;
-
-typedef void (*fscache_rw_complete_t)(struct page *page,
-				      void *context,
-				      int error);
-
-/* result of index entry consultation */
-enum fscache_checkaux {
-	FSCACHE_CHECKAUX_OKAY,		/* entry okay as is */
-	FSCACHE_CHECKAUX_NEEDS_UPDATE,	/* entry requires update */
-	FSCACHE_CHECKAUX_OBSOLETE,	/* entry requires deletion */
-};
-
-/*
- * fscache cookie definition
- */
-struct fscache_cookie_def {
-	/* name of cookie type */
-	char name[16];
-
-	/* cookie type */
-	uint8_t type;
-#define FSCACHE_COOKIE_TYPE_INDEX	0
-#define FSCACHE_COOKIE_TYPE_DATAFILE	1
-
-	/* select the cache into which to insert an entry in this index
-	 * - optional
-	 * - should return a cache identifier or NULL to cause the cache to be
-	 *   inherited from the parent if possible or the first cache picked
-	 *   for a non-index file if not
-	 */
-	struct fscache_cache_tag *(*select_cache)(
-		const void *parent_netfs_data,
-		const void *cookie_netfs_data);
-
-	/* get an index key
-	 * - should store the key data in the buffer
-	 * - should return the amount of data stored
-	 * - not permitted to return an error
-	 * - the netfs data from the cookie being used as the source is
-	 *   presented
-	 */
-	uint16_t (*get_key)(const void *cookie_netfs_data,
-			    void *buffer,
-			    uint16_t bufmax);
-
-	/* get certain file attributes from the netfs data
-	 * - this function can be absent for an index
-	 * - not permitted to return an error
-	 * - the netfs data from the cookie being used as the source is
-	 *   presented
-	 */
-	void (*get_attr)(const void *cookie_netfs_data, uint64_t *size);
-
-	/* get the auxiliary data from netfs data
-	 * - this function can be absent if the index carries no state data
-	 * - should store the auxiliary data in the buffer
-	 * - should return the amount of amount stored
-	 * - not permitted to return an error
-	 * - the netfs data from the cookie being used as the source is
-	 *   presented
-	 */
-	uint16_t (*get_aux)(const void *cookie_netfs_data,
-			    void *buffer,
-			    uint16_t bufmax);
-
-	/* consult the netfs about the state of an object
-	 * - this function can be absent if the index carries no state data
-	 * - the netfs data from the cookie being used as the target is
-	 *   presented, as is the auxiliary data
-	 */
-	enum fscache_checkaux (*check_aux)(void *cookie_netfs_data,
-					   const void *data,
-					   uint16_t datalen);
-
-	/* get an extra reference on a read context
-	 * - this function can be absent if the completion function doesn't
-	 *   require a context
-	 */
-	void (*get_context)(void *cookie_netfs_data, void *context);
-
-	/* release an extra reference on a read context
-	 * - this function can be absent if the completion function doesn't
-	 *   require a context
-	 */
-	void (*put_context)(void *cookie_netfs_data, void *context);
-
-	/* indicate pages that now have cache metadata retained
-	 * - this function should mark the specified pages as now being cached
-	 * - the pages will have been marked with PG_fscache before this is
-	 *   called, so this is optional
-	 */
-	void (*mark_pages_cached)(void *cookie_netfs_data,
-				  struct address_space *mapping,
-				  struct pagevec *cached_pvec);
-
-	/* indicate the cookie is no longer cached
-	 * - this function is called when the backing store currently caching
-	 *   a cookie is removed
-	 * - the netfs should use this to clean up any markers indicating
-	 *   cached pages
-	 * - this is mandatory for any object that may have data
-	 */
-	void (*now_uncached)(void *cookie_netfs_data);
-};
-
-/*
- * fscache cached network filesystem type
- * - name, version and ops must be filled in before registration
- * - all other fields will be set during registration
- */
-struct fscache_netfs {
-	uint32_t			version;	/* indexing version */
-	const char			*name;		/* filesystem name */
-	struct fscache_cookie		*primary_index;
-	struct list_head		link;		/* internal link */
-};
-
-/*
- * slow-path functions for when there is actually caching available, and the
- * netfs does actually have a valid token
- * - these are not to be called directly
- * - these are undefined symbols when FS-Cache is not configured and the
- *   optimiser takes care of not using them
- */
-extern int __fscache_register_netfs(struct fscache_netfs *);
-extern void __fscache_unregister_netfs(struct fscache_netfs *);
-extern struct fscache_cache_tag *__fscache_lookup_cache_tag(const char *);
-extern void __fscache_release_cache_tag(struct fscache_cache_tag *);
-
-extern struct fscache_cookie *__fscache_acquire_cookie(
-	struct fscache_cookie *,
-	const struct fscache_cookie_def *,
-	void *);
-extern void __fscache_relinquish_cookie(struct fscache_cookie *, int);
-extern void __fscache_update_cookie(struct fscache_cookie *);
-extern int __fscache_attr_changed(struct fscache_cookie *);
-extern int __fscache_read_or_alloc_page(struct fscache_cookie *,
-					struct page *,
-					fscache_rw_complete_t,
-					void *,
-					gfp_t);
-extern int __fscache_read_or_alloc_pages(struct fscache_cookie *,
-					 struct address_space *,
-					 struct list_head *,
-					 unsigned *,
-					 fscache_rw_complete_t,
-					 void *,
-					 gfp_t);
-extern int __fscache_alloc_page(struct fscache_cookie *, struct page *, gfp_t);
-extern int __fscache_write_page(struct fscache_cookie *, struct page *, gfp_t);
-extern void __fscache_uncache_page(struct fscache_cookie *, struct page *);
-extern bool __fscache_check_page_write(struct fscache_cookie *, struct page *);
-extern void __fscache_wait_on_page_write(struct fscache_cookie *, struct page *);
-extern bool __fscache_maybe_release_page(struct fscache_cookie *, struct page *,
-					 gfp_t);
-extern void __fscache_uncache_all_inode_pages(struct fscache_cookie *,
-					      struct inode *);
-
-/**
- * fscache_register_netfs - Register a filesystem as desiring caching services
- * @netfs: The description of the filesystem
- *
- * Register a filesystem as desiring caching services if they're available.
- *
- * See Documentation/filesystems/caching/netfs-api.txt for a complete
- * description.
- */
-static inline
-int fscache_register_netfs(struct fscache_netfs *netfs)
-{
-	if (fscache_available())
-		return __fscache_register_netfs(netfs);
-	else
-		return 0;
-}
-
-/**
- * fscache_unregister_netfs - Indicate that a filesystem no longer desires
- * caching services
- * @netfs: The description of the filesystem
- *
- * Indicate that a filesystem no longer desires caching services for the
- * moment.
- *
- * See Documentation/filesystems/caching/netfs-api.txt for a complete
- * description.
- */
-static inline
-void fscache_unregister_netfs(struct fscache_netfs *netfs)
-{
-	if (fscache_available())
-		__fscache_unregister_netfs(netfs);
-}
-
-/**
- * fscache_lookup_cache_tag - Look up a cache tag
- * @name: The name of the tag to search for
- *
- * Acquire a specific cache referral tag that can be used to select a specific
- * cache in which to cache an index.
- *
- * See Documentation/filesystems/caching/netfs-api.txt for a complete
- * description.
- */
-static inline
-struct fscache_cache_tag *fscache_lookup_cache_tag(const char *name)
-{
-	if (fscache_available())
-		return __fscache_lookup_cache_tag(name);
-	else
-		return NULL;
-}
-
-/**
- * fscache_release_cache_tag - Release a cache tag
- * @tag: The tag to release
- *
- * Release a reference to a cache referral tag previously looked up.
- *
- * See Documentation/filesystems/caching/netfs-api.txt for a complete
- * description.
- */
-static inline
-void fscache_release_cache_tag(struct fscache_cache_tag *tag)
-{
-	if (fscache_available())
-		__fscache_release_cache_tag(tag);
-}
-
-/**
- * fscache_acquire_cookie - Acquire a cookie to represent a cache object
- * @parent: The cookie that's to be the parent of this one
- * @def: A description of the cache object, including callback operations
- * @netfs_data: An arbitrary piece of data to be kept in the cookie to
- * represent the cache object to the netfs
- *
- * This function is used to inform FS-Cache about part of an index hierarchy
- * that can be used to locate files.  This is done by requesting a cookie for
- * each index in the path to the file.
- *
- * See Documentation/filesystems/caching/netfs-api.txt for a complete
- * description.
- */
-static inline
-struct fscache_cookie *fscache_acquire_cookie(
-	struct fscache_cookie *parent,
-	const struct fscache_cookie_def *def,
-	void *netfs_data)
-{
-	if (fscache_cookie_valid(parent))
-		return __fscache_acquire_cookie(parent, def, netfs_data);
-	else
-		return NULL;
-}
-
-/**
- * fscache_relinquish_cookie - Return the cookie to the cache, maybe discarding
- * it
- * @cookie: The cookie being returned
- * @retire: True if the cache object the cookie represents is to be discarded
- *
- * This function returns a cookie to the cache, forcibly discarding the
- * associated cache object if retire is set to true.
- *
- * See Documentation/filesystems/caching/netfs-api.txt for a complete
- * description.
- */
-static inline
-void fscache_relinquish_cookie(struct fscache_cookie *cookie, int retire)
-{
-	if (fscache_cookie_valid(cookie))
-		__fscache_relinquish_cookie(cookie, retire);
-}
-
-/**
- * fscache_update_cookie - Request that a cache object be updated
- * @cookie: The cookie representing the cache object
- *
- * Request an update of the index data for the cache object associated with the
- * cookie.
- *
- * See Documentation/filesystems/caching/netfs-api.txt for a complete
- * description.
- */
-static inline
-void fscache_update_cookie(struct fscache_cookie *cookie)
-{
-	if (fscache_cookie_valid(cookie))
-		__fscache_update_cookie(cookie);
-}
-
-/**
- * fscache_pin_cookie - Pin a data-storage cache object in its cache
- * @cookie: The cookie representing the cache object
- *
- * Permit data-storage cache objects to be pinned in the cache.
- *
- * See Documentation/filesystems/caching/netfs-api.txt for a complete
- * description.
- */
-static inline
-int fscache_pin_cookie(struct fscache_cookie *cookie)
-{
-	return -ENOBUFS;
-}
-
-/**
- * fscache_pin_cookie - Unpin a data-storage cache object in its cache
- * @cookie: The cookie representing the cache object
- *
- * Permit data-storage cache objects to be unpinned from the cache.
- *
- * See Documentation/filesystems/caching/netfs-api.txt for a complete
- * description.
- */
-static inline
-void fscache_unpin_cookie(struct fscache_cookie *cookie)
-{
-}
-
-/**
- * fscache_attr_changed - Notify cache that an object's attributes changed
- * @cookie: The cookie representing the cache object
- *
- * Send a notification to the cache indicating that an object's attributes have
- * changed.  This includes the data size.  These attributes will be obtained
- * through the get_attr() cookie definition op.
- *
- * See Documentation/filesystems/caching/netfs-api.txt for a complete
- * description.
- */
-static inline
-int fscache_attr_changed(struct fscache_cookie *cookie)
-{
-	if (fscache_cookie_valid(cookie))
-		return __fscache_attr_changed(cookie);
-	else
-		return -ENOBUFS;
-}
-
-/**
- * fscache_reserve_space - Reserve data space for a cached object
- * @cookie: The cookie representing the cache object
- * @i_size: The amount of space to be reserved
- *
- * Reserve an amount of space in the cache for the cache object attached to a
- * cookie so that a write to that object within the space can always be
- * honoured.
- *
- * See Documentation/filesystems/caching/netfs-api.txt for a complete
- * description.
- */
-static inline
-int fscache_reserve_space(struct fscache_cookie *cookie, loff_t size)
-{
-	return -ENOBUFS;
-}
-
-/**
- * fscache_read_or_alloc_page - Read a page from the cache or allocate a block
- * in which to store it
- * @cookie: The cookie representing the cache object
- * @page: The netfs page to fill if possible
- * @end_io_func: The callback to invoke when and if the page is filled
- * @context: An arbitrary piece of data to pass on to end_io_func()
- * @gfp: The conditions under which memory allocation should be made
- *
- * Read a page from the cache, or if that's not possible make a potential
- * one-block reservation in the cache into which the page may be stored once
- * fetched from the server.
- *
- * If the page is not backed by the cache object, or if it there's some reason
- * it can't be, -ENOBUFS will be returned and nothing more will be done for
- * that page.
- *
- * Else, if that page is backed by the cache, a read will be initiated directly
- * to the netfs's page and 0 will be returned by this function.  The
- * end_io_func() callback will be invoked when the operation terminates on a
- * completion or failure.  Note that the callback may be invoked before the
- * return.
- *
- * Else, if the page is unbacked, -ENODATA is returned and a block may have
- * been allocated in the cache.
- *
- * See Documentation/filesystems/caching/netfs-api.txt for a complete
- * description.
- */
-static inline
-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)
-{
-	if (fscache_cookie_valid(cookie))
-		return __fscache_read_or_alloc_page(cookie, page, end_io_func,
-						    context, gfp);
-	else
-		return -ENOBUFS;
-}
-
-/**
- * fscache_read_or_alloc_pages - Read pages from the cache and/or allocate
- * blocks in which to store them
- * @cookie: The cookie representing the cache object
- * @mapping: The netfs inode mapping to which the pages will be attached
- * @pages: A list of potential netfs pages to be filled
- * @nr_pages: Number of pages to be read and/or allocated
- * @end_io_func: The callback to invoke when and if each page is filled
- * @context: An arbitrary piece of data to pass on to end_io_func()
- * @gfp: The conditions under which memory allocation should be made
- *
- * Read a set of pages from the cache, or if that's not possible, attempt to
- * make a potential one-block reservation for each page in the cache into which
- * that page may be stored once fetched from the server.
- *
- * If some pages are not backed by the cache object, or if it there's some
- * reason they can't be, -ENOBUFS will be returned and nothing more will be
- * done for that pages.
- *
- * Else, if some of the pages are backed by the cache, a read will be initiated
- * directly to the netfs's page and 0 will be returned by this function.  The
- * end_io_func() callback will be invoked when the operation terminates on a
- * completion or failure.  Note that the callback may be invoked before the
- * return.
- *
- * Else, if a page is unbacked, -ENODATA is returned and a block may have
- * been allocated in the cache.
- *
- * Because the function may want to return all of -ENOBUFS, -ENODATA and 0 in
- * regard to different pages, the return values are prioritised in that order.
- * Any pages submitted for reading are removed from the pages list.
- *
- * See Documentation/filesystems/caching/netfs-api.txt for a complete
- * description.
- */
-static inline
-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)
-{
-	if (fscache_cookie_valid(cookie))
-		return __fscache_read_or_alloc_pages(cookie, mapping, pages,
-						     nr_pages, end_io_func,
-						     context, gfp);
-	else
-		return -ENOBUFS;
-}
-
-/**
- * fscache_alloc_page - Allocate a block in which to store a page
- * @cookie: The cookie representing the cache object
- * @page: The netfs page to allocate a page for
- * @gfp: The conditions under which memory allocation should be made
- *
- * Request Allocation a block in the cache in which to store a netfs page
- * without retrieving any contents from the cache.
- *
- * If the page is not backed by a file then -ENOBUFS will be returned and
- * nothing more will be done, and no reservation will be made.
- *
- * Else, a block will be allocated if one wasn't already, and 0 will be
- * returned
- *
- * See Documentation/filesystems/caching/netfs-api.txt for a complete
- * description.
- */
-static inline
-int fscache_alloc_page(struct fscache_cookie *cookie,
-		       struct page *page,
-		       gfp_t gfp)
-{
-	if (fscache_cookie_valid(cookie))
-		return __fscache_alloc_page(cookie, page, gfp);
-	else
-		return -ENOBUFS;
-}
-
-/**
- * fscache_write_page - Request storage of a page in the cache
- * @cookie: The cookie representing the cache object
- * @page: The netfs page to store
- * @gfp: The conditions under which memory allocation should be made
- *
- * Request the contents of the netfs page be written into the cache.  This
- * request may be ignored if no cache block is currently allocated, in which
- * case it will return -ENOBUFS.
- *
- * If a cache block was already allocated, a write will be initiated and 0 will
- * be returned.  The PG_fscache_write page bit is set immediately and will then
- * be cleared at the completion of the write to indicate the success or failure
- * of the operation.  Note that the completion may happen before the return.
- *
- * See Documentation/filesystems/caching/netfs-api.txt for a complete
- * description.
- */
-static inline
-int fscache_write_page(struct fscache_cookie *cookie,
-		       struct page *page,
-		       gfp_t gfp)
-{
-	if (fscache_cookie_valid(cookie))
-		return __fscache_write_page(cookie, page, gfp);
-	else
-		return -ENOBUFS;
-}
-
-/**
- * fscache_uncache_page - Indicate that caching is no longer required on a page
- * @cookie: The cookie representing the cache object
- * @page: The netfs page that was being cached.
- *
- * Tell the cache that we no longer want a page to be cached and that it should
- * remove any knowledge of the netfs page it may have.
- *
- * Note that this cannot cancel any outstanding I/O operations between this
- * page and the cache.
- *
- * See Documentation/filesystems/caching/netfs-api.txt for a complete
- * description.
- */
-static inline
-void fscache_uncache_page(struct fscache_cookie *cookie,
-			  struct page *page)
-{
-	if (fscache_cookie_valid(cookie))
-		__fscache_uncache_page(cookie, page);
-}
-
-/**
- * fscache_check_page_write - Ask if a page is being writing to the cache
- * @cookie: The cookie representing the cache object
- * @page: The netfs page that is being cached.
- *
- * Ask the cache if a page is being written to the cache.
- *
- * See Documentation/filesystems/caching/netfs-api.txt for a complete
- * description.
- */
-static inline
-bool fscache_check_page_write(struct fscache_cookie *cookie,
-			      struct page *page)
-{
-	if (fscache_cookie_valid(cookie))
-		return __fscache_check_page_write(cookie, page);
-	return false;
-}
-
-/**
- * fscache_wait_on_page_write - Wait for a page to complete writing to the cache
- * @cookie: The cookie representing the cache object
- * @page: The netfs page that is being cached.
- *
- * Ask the cache to wake us up when a page is no longer being written to the
- * cache.
- *
- * See Documentation/filesystems/caching/netfs-api.txt for a complete
- * description.
- */
-static inline
-void fscache_wait_on_page_write(struct fscache_cookie *cookie,
-				struct page *page)
-{
-	if (fscache_cookie_valid(cookie))
-		__fscache_wait_on_page_write(cookie, page);
-}
-
-/**
- * fscache_maybe_release_page - Consider releasing a page, cancelling a store
- * @cookie: The cookie representing the cache object
- * @page: The netfs page that is being cached.
- * @gfp: The gfp flags passed to releasepage()
- *
- * Consider releasing a page for the vmscan algorithm, on behalf of the netfs's
- * releasepage() call.  A storage request on the page may cancelled if it is
- * not currently being processed.
- *
- * The function returns true if the page no longer has a storage request on it,
- * and false if a storage request is left in place.  If true is returned, the
- * page will have been passed to fscache_uncache_page().  If false is returned
- * the page cannot be freed yet.
- */
-static inline
-bool fscache_maybe_release_page(struct fscache_cookie *cookie,
-				struct page *page,
-				gfp_t gfp)
-{
-	if (fscache_cookie_valid(cookie) && PageFsCache(page))
-		return __fscache_maybe_release_page(cookie, page, gfp);
-	return false;
-}
-
-/**
- * fscache_uncache_all_inode_pages - Uncache all an inode's pages
- * @cookie: The cookie representing the inode's cache object.
- * @inode: The inode to uncache pages from.
- *
- * Uncache all the pages in an inode that are marked PG_fscache, assuming them
- * to be associated with the given cookie.
- *
- * This function may sleep.  It will wait for pages that are being written out
- * and will wait whilst the PG_fscache mark is removed by the cache.
- */
-static inline
-void fscache_uncache_all_inode_pages(struct fscache_cookie *cookie,
-				     struct inode *inode)
-{
-	if (fscache_cookie_valid(cookie))
-		__fscache_uncache_all_inode_pages(cookie, inode);
-}
-
-#endif /* _LINUX_FSCACHE_H */