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-rw-r--r--ANDROID_3.4.5/fs/cifs/fscache.c235
1 files changed, 0 insertions, 235 deletions
diff --git a/ANDROID_3.4.5/fs/cifs/fscache.c b/ANDROID_3.4.5/fs/cifs/fscache.c
deleted file mode 100644
index 42e5363b..00000000
--- a/ANDROID_3.4.5/fs/cifs/fscache.c
+++ /dev/null
@@ -1,235 +0,0 @@
-/*
- * fs/cifs/fscache.c - CIFS filesystem cache interface
- *
- * Copyright (c) 2010 Novell, Inc.
- * Author(s): Suresh Jayaraman <sjayaraman@suse.de>
- *
- * This library is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published
- * by the Free Software Foundation; either version 2.1 of the License, or
- * (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
- * the GNU Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include "fscache.h"
-#include "cifsglob.h"
-#include "cifs_debug.h"
-#include "cifs_fs_sb.h"
-
-void cifs_fscache_get_client_cookie(struct TCP_Server_Info *server)
-{
- server->fscache =
- fscache_acquire_cookie(cifs_fscache_netfs.primary_index,
- &cifs_fscache_server_index_def, server);
- cFYI(1, "%s: (0x%p/0x%p)", __func__, server,
- server->fscache);
-}
-
-void cifs_fscache_release_client_cookie(struct TCP_Server_Info *server)
-{
- cFYI(1, "%s: (0x%p/0x%p)", __func__, server,
- server->fscache);
- fscache_relinquish_cookie(server->fscache, 0);
- server->fscache = NULL;
-}
-
-void cifs_fscache_get_super_cookie(struct cifs_tcon *tcon)
-{
- struct TCP_Server_Info *server = tcon->ses->server;
-
- tcon->fscache =
- fscache_acquire_cookie(server->fscache,
- &cifs_fscache_super_index_def, tcon);
- cFYI(1, "%s: (0x%p/0x%p)", __func__, server->fscache,
- tcon->fscache);
-}
-
-void cifs_fscache_release_super_cookie(struct cifs_tcon *tcon)
-{
- cFYI(1, "%s: (0x%p)", __func__, tcon->fscache);
- fscache_relinquish_cookie(tcon->fscache, 0);
- tcon->fscache = NULL;
-}
-
-static void cifs_fscache_enable_inode_cookie(struct inode *inode)
-{
- struct cifsInodeInfo *cifsi = CIFS_I(inode);
- struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
- struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
-
- if (cifsi->fscache)
- return;
-
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_FSCACHE) {
- cifsi->fscache = fscache_acquire_cookie(tcon->fscache,
- &cifs_fscache_inode_object_def, cifsi);
- cFYI(1, "%s: got FH cookie (0x%p/0x%p)", __func__,
- tcon->fscache, cifsi->fscache);
- }
-}
-
-void cifs_fscache_release_inode_cookie(struct inode *inode)
-{
- struct cifsInodeInfo *cifsi = CIFS_I(inode);
-
- if (cifsi->fscache) {
- cFYI(1, "%s: (0x%p)", __func__, cifsi->fscache);
- fscache_relinquish_cookie(cifsi->fscache, 0);
- cifsi->fscache = NULL;
- }
-}
-
-static void cifs_fscache_disable_inode_cookie(struct inode *inode)
-{
- struct cifsInodeInfo *cifsi = CIFS_I(inode);
-
- if (cifsi->fscache) {
- cFYI(1, "%s: (0x%p)", __func__, cifsi->fscache);
- fscache_uncache_all_inode_pages(cifsi->fscache, inode);
- fscache_relinquish_cookie(cifsi->fscache, 1);
- cifsi->fscache = NULL;
- }
-}
-
-void cifs_fscache_set_inode_cookie(struct inode *inode, struct file *filp)
-{
- if ((filp->f_flags & O_ACCMODE) != O_RDONLY)
- cifs_fscache_disable_inode_cookie(inode);
- else
- cifs_fscache_enable_inode_cookie(inode);
-}
-
-void cifs_fscache_reset_inode_cookie(struct inode *inode)
-{
- struct cifsInodeInfo *cifsi = CIFS_I(inode);
- struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
- struct fscache_cookie *old = cifsi->fscache;
-
- if (cifsi->fscache) {
- /* retire the current fscache cache and get a new one */
- fscache_relinquish_cookie(cifsi->fscache, 1);
-
- cifsi->fscache = fscache_acquire_cookie(
- cifs_sb_master_tcon(cifs_sb)->fscache,
- &cifs_fscache_inode_object_def,
- cifsi);
- cFYI(1, "%s: new cookie 0x%p oldcookie 0x%p",
- __func__, cifsi->fscache, old);
- }
-}
-
-int cifs_fscache_release_page(struct page *page, gfp_t gfp)
-{
- if (PageFsCache(page)) {
- struct inode *inode = page->mapping->host;
- struct cifsInodeInfo *cifsi = CIFS_I(inode);
-
- cFYI(1, "%s: (0x%p/0x%p)", __func__, page,
- cifsi->fscache);
- if (!fscache_maybe_release_page(cifsi->fscache, page, gfp))
- return 0;
- }
-
- return 1;
-}
-
-static void cifs_readpage_from_fscache_complete(struct page *page, void *ctx,
- int error)
-{
- cFYI(1, "%s: (0x%p/%d)", __func__, page, error);
- if (!error)
- SetPageUptodate(page);
- unlock_page(page);
-}
-
-/*
- * Retrieve a page from FS-Cache
- */
-int __cifs_readpage_from_fscache(struct inode *inode, struct page *page)
-{
- int ret;
-
- cFYI(1, "%s: (fsc:%p, p:%p, i:0x%p", __func__,
- CIFS_I(inode)->fscache, page, inode);
- ret = fscache_read_or_alloc_page(CIFS_I(inode)->fscache, page,
- cifs_readpage_from_fscache_complete,
- NULL,
- GFP_KERNEL);
- switch (ret) {
-
- case 0: /* page found in fscache, read submitted */
- cFYI(1, "%s: submitted", __func__);
- return ret;
- case -ENOBUFS: /* page won't be cached */
- case -ENODATA: /* page not in cache */
- cFYI(1, "%s: %d", __func__, ret);
- return 1;
-
- default:
- cERROR(1, "unknown error ret = %d", ret);
- }
- return ret;
-}
-
-/*
- * Retrieve a set of pages from FS-Cache
- */
-int __cifs_readpages_from_fscache(struct inode *inode,
- struct address_space *mapping,
- struct list_head *pages,
- unsigned *nr_pages)
-{
- int ret;
-
- cFYI(1, "%s: (0x%p/%u/0x%p)", __func__,
- CIFS_I(inode)->fscache, *nr_pages, inode);
- ret = fscache_read_or_alloc_pages(CIFS_I(inode)->fscache, mapping,
- pages, nr_pages,
- cifs_readpage_from_fscache_complete,
- NULL,
- mapping_gfp_mask(mapping));
- switch (ret) {
- case 0: /* read submitted to the cache for all pages */
- cFYI(1, "%s: submitted", __func__);
- return ret;
-
- case -ENOBUFS: /* some pages are not cached and can't be */
- case -ENODATA: /* some pages are not cached */
- cFYI(1, "%s: no page", __func__);
- return 1;
-
- default:
- cFYI(1, "unknown error ret = %d", ret);
- }
-
- return ret;
-}
-
-void __cifs_readpage_to_fscache(struct inode *inode, struct page *page)
-{
- int ret;
-
- cFYI(1, "%s: (fsc: %p, p: %p, i: %p)", __func__,
- CIFS_I(inode)->fscache, page, inode);
- ret = fscache_write_page(CIFS_I(inode)->fscache, page, GFP_KERNEL);
- if (ret != 0)
- fscache_uncache_page(CIFS_I(inode)->fscache, page);
-}
-
-void __cifs_fscache_invalidate_page(struct page *page, struct inode *inode)
-{
- struct cifsInodeInfo *cifsi = CIFS_I(inode);
- struct fscache_cookie *cookie = cifsi->fscache;
-
- cFYI(1, "%s: (0x%p/0x%p)", __func__, page, cookie);
- fscache_wait_on_page_write(cookie, page);
- fscache_uncache_page(cookie, page);
-}
-
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