1 files changed, 0 insertions, 378 deletions
diff --git a/ANDROID_3.4.5/fs/afs/file.c b/ANDROID_3.4.5/fs/afs/file.c
deleted file mode 100644
index 8f6e9234..00000000
--- a/ANDROID_3.4.5/fs/afs/file.c
+++ /dev/null
@@ -1,378 +0,0 @@
-/* AFS filesystem file handling
- *
- * Copyright (C) 2002, 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.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/fs.h>
-#include <linux/pagemap.h>
-#include <linux/writeback.h>
-#include <linux/gfp.h>
-#include "internal.h"
-
-static int afs_readpage(struct file *file, struct page *page);
-static void afs_invalidatepage(struct page *page, unsigned long offset);
-static int afs_releasepage(struct page *page, gfp_t gfp_flags);
-static int afs_launder_page(struct page *page);
-
-static int afs_readpages(struct file *filp, struct address_space *mapping,
-			 struct list_head *pages, unsigned nr_pages);
-
-const struct file_operations afs_file_operations = {
-	.open		= afs_open,
-	.release	= afs_release,
-	.llseek		= generic_file_llseek,
-	.read		= do_sync_read,
-	.write		= do_sync_write,
-	.aio_read	= generic_file_aio_read,
-	.aio_write	= afs_file_write,
-	.mmap		= generic_file_readonly_mmap,
-	.splice_read	= generic_file_splice_read,
-	.fsync		= afs_fsync,
-	.lock		= afs_lock,
-	.flock		= afs_flock,
-};
-
-const struct inode_operations afs_file_inode_operations = {
-	.getattr	= afs_getattr,
-	.setattr	= afs_setattr,
-	.permission	= afs_permission,
-};
-
-const struct address_space_operations afs_fs_aops = {
-	.readpage	= afs_readpage,
-	.readpages	= afs_readpages,
-	.set_page_dirty	= afs_set_page_dirty,
-	.launder_page	= afs_launder_page,
-	.releasepage	= afs_releasepage,
-	.invalidatepage	= afs_invalidatepage,
-	.write_begin	= afs_write_begin,
-	.write_end	= afs_write_end,
-	.writepage	= afs_writepage,
-	.writepages	= afs_writepages,
-};
-
-/*
- * open an AFS file or directory and attach a key to it
- */
-int afs_open(struct inode *inode, struct file *file)
-{
-	struct afs_vnode *vnode = AFS_FS_I(inode);
-	struct key *key;
-	int ret;
-
-	_enter("{%x:%u},", vnode->fid.vid, vnode->fid.vnode);
-
-	key = afs_request_key(vnode->volume->cell);
-	if (IS_ERR(key)) {
-		_leave(" = %ld [key]", PTR_ERR(key));
-		return PTR_ERR(key);
-	}
-
-	ret = afs_validate(vnode, key);
-	if (ret < 0) {
-		_leave(" = %d [val]", ret);
-		return ret;
-	}
-
-	file->private_data = key;
-	_leave(" = 0");
-	return 0;
-}
-
-/*
- * release an AFS file or directory and discard its key
- */
-int afs_release(struct inode *inode, struct file *file)
-{
-	struct afs_vnode *vnode = AFS_FS_I(inode);
-
-	_enter("{%x:%u},", vnode->fid.vid, vnode->fid.vnode);
-
-	key_put(file->private_data);
-	_leave(" = 0");
-	return 0;
-}
-
-#ifdef CONFIG_AFS_FSCACHE
-/*
- * deal with notification that a page was read from the cache
- */
-static void afs_file_readpage_read_complete(struct page *page,
-					    void *data,
-					    int error)
-{
-	_enter("%p,%p,%d", page, data, error);
-
-	/* if the read completes with an error, we just unlock the page and let
-	 * the VM reissue the readpage */
-	if (!error)
-		SetPageUptodate(page);
-	unlock_page(page);
-}
-#endif
-
-/*
- * read page from file, directory or symlink, given a key to use
- */
-int afs_page_filler(void *data, struct page *page)
-{
-	struct inode *inode = page->mapping->host;
-	struct afs_vnode *vnode = AFS_FS_I(inode);
-	struct key *key = data;
-	size_t len;
-	off_t offset;
-	int ret;
-
-	_enter("{%x},{%lu},{%lu}", key_serial(key), inode->i_ino, page->index);
-
-	BUG_ON(!PageLocked(page));
-
-	ret = -ESTALE;
-	if (test_bit(AFS_VNODE_DELETED, &vnode->flags))
-		goto error;
-
-	/* is it cached? */
-#ifdef CONFIG_AFS_FSCACHE
-	ret = fscache_read_or_alloc_page(vnode->cache,
-					 page,
-					 afs_file_readpage_read_complete,
-					 NULL,
-					 GFP_KERNEL);
-#else
-	ret = -ENOBUFS;
-#endif
-	switch (ret) {
-		/* read BIO submitted (page in cache) */
-	case 0:
-		break;
-
-		/* page not yet cached */
-	case -ENODATA:
-		_debug("cache said ENODATA");
-		goto go_on;
-
-		/* page will not be cached */
-	case -ENOBUFS:
-		_debug("cache said ENOBUFS");
-	default:
-	go_on:
-		offset = page->index << PAGE_CACHE_SHIFT;
-		len = min_t(size_t, i_size_read(inode) - offset, PAGE_SIZE);
-
-		/* read the contents of the file from the server into the
-		 * page */
-		ret = afs_vnode_fetch_data(vnode, key, offset, len, page);
-		if (ret < 0) {
-			if (ret == -ENOENT) {
-				_debug("got NOENT from server"
-				       " - marking file deleted and stale");
-				set_bit(AFS_VNODE_DELETED, &vnode->flags);
-				ret = -ESTALE;
-			}
-
-#ifdef CONFIG_AFS_FSCACHE
-			fscache_uncache_page(vnode->cache, page);
-#endif
-			BUG_ON(PageFsCache(page));
-			goto error;
-		}
-
-		SetPageUptodate(page);
-
-		/* send the page to the cache */
-#ifdef CONFIG_AFS_FSCACHE
-		if (PageFsCache(page) &&
-		    fscache_write_page(vnode->cache, page, GFP_KERNEL) != 0) {
-			fscache_uncache_page(vnode->cache, page);
-			BUG_ON(PageFsCache(page));
-		}
-#endif
-		unlock_page(page);
-	}
-
-	_leave(" = 0");
-	return 0;
-
-error:
-	SetPageError(page);
-	unlock_page(page);
-	_leave(" = %d", ret);
-	return ret;
-}
-
-/*
- * read page from file, directory or symlink, given a file to nominate the key
- * to be used
- */
-static int afs_readpage(struct file *file, struct page *page)
-{
-	struct key *key;
-	int ret;
-
-	if (file) {
-		key = file->private_data;
-		ASSERT(key != NULL);
-		ret = afs_page_filler(key, page);
-	} else {
-		struct inode *inode = page->mapping->host;
-		key = afs_request_key(AFS_FS_S(inode->i_sb)->volume->cell);
-		if (IS_ERR(key)) {
-			ret = PTR_ERR(key);
-		} else {
-			ret = afs_page_filler(key, page);
-			key_put(key);
-		}
-	}
-	return ret;
-}
-
-/*
- * read a set of pages
- */
-static int afs_readpages(struct file *file, struct address_space *mapping,
-			 struct list_head *pages, unsigned nr_pages)
-{
-	struct key *key = file->private_data;
-	struct afs_vnode *vnode;
-	int ret = 0;
-
-	_enter("{%d},{%lu},,%d",
-	       key_serial(key), mapping->host->i_ino, nr_pages);
-
-	ASSERT(key != NULL);
-
-	vnode = AFS_FS_I(mapping->host);
-	if (test_bit(AFS_VNODE_DELETED, &vnode->flags)) {
-		_leave(" = -ESTALE");
-		return -ESTALE;
-	}
-
-	/* attempt to read as many of the pages as possible */
-#ifdef CONFIG_AFS_FSCACHE
-	ret = fscache_read_or_alloc_pages(vnode->cache,
-					  mapping,
-					  pages,
-					  &nr_pages,
-					  afs_file_readpage_read_complete,
-					  NULL,
-					  mapping_gfp_mask(mapping));
-#else
-	ret = -ENOBUFS;
-#endif
-
-	switch (ret) {
-		/* all pages are being read from the cache */
-	case 0:
-		BUG_ON(!list_empty(pages));
-		BUG_ON(nr_pages != 0);
-		_leave(" = 0 [reading all]");
-		return 0;
-
-		/* there were pages that couldn't be read from the cache */
-	case -ENODATA:
-	case -ENOBUFS:
-		break;
-
-		/* other error */
-	default:
-		_leave(" = %d", ret);
-		return ret;
-	}
-
-	/* load the missing pages from the network */
-	ret = read_cache_pages(mapping, pages, afs_page_filler, key);
-
-	_leave(" = %d [netting]", ret);
-	return ret;
-}
-
-/*
- * write back a dirty page
- */
-static int afs_launder_page(struct page *page)
-{
-	_enter("{%lu}", page->index);
-
-	return 0;
-}
-
-/*
- * invalidate part or all of a page
- * - release a page and clean up its private data if offset is 0 (indicating
- *   the entire page)
- */
-static void afs_invalidatepage(struct page *page, unsigned long offset)
-{
-	struct afs_writeback *wb = (struct afs_writeback *) page_private(page);
-
-	_enter("{%lu},%lu", page->index, offset);
-
-	BUG_ON(!PageLocked(page));
-
-	/* we clean up only if the entire page is being invalidated */
-	if (offset == 0) {
-#ifdef CONFIG_AFS_FSCACHE
-		if (PageFsCache(page)) {
-			struct afs_vnode *vnode = AFS_FS_I(page->mapping->host);
-			fscache_wait_on_page_write(vnode->cache, page);
-			fscache_uncache_page(vnode->cache, page);
-		}
-#endif
-
-		if (PagePrivate(page)) {
-			if (wb && !PageWriteback(page)) {
-				set_page_private(page, 0);
-				afs_put_writeback(wb);
-			}
-
-			if (!page_private(page))
-				ClearPagePrivate(page);
-		}
-	}
-
-	_leave("");
-}
-
-/*
- * release a page and clean up its private state if it's not busy
- * - return true if the page can now be released, false if not
- */
-static int afs_releasepage(struct page *page, gfp_t gfp_flags)
-{
-	struct afs_writeback *wb = (struct afs_writeback *) page_private(page);
-	struct afs_vnode *vnode = AFS_FS_I(page->mapping->host);
-
-	_enter("{{%x:%u}[%lu],%lx},%x",
-	       vnode->fid.vid, vnode->fid.vnode, page->index, page->flags,
-	       gfp_flags);
-
-	/* deny if page is being written to the cache and the caller hasn't
-	 * elected to wait */
-#ifdef CONFIG_AFS_FSCACHE
-	if (!fscache_maybe_release_page(vnode->cache, page, gfp_flags)) {
-		_leave(" = F [cache busy]");
-		return 0;
-	}
-#endif
-
-	if (PagePrivate(page)) {
-		if (wb) {
-			set_page_private(page, 0);
-			afs_put_writeback(wb);
-		}
-		ClearPagePrivate(page);
-	}
-
-	/* indicate that the page can be released */
-	_leave(" = T");
-	return 1;
-}