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cifs: store pages into local cache

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Store pages from an CIFS inode into the data storage object associated with
that inode.

Signed-off-by: Suresh Jayaraman <sjayaraman@suse.de>
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Suresh Jayaraman 2010-07-05 18:13:11 +05:30 committed by Steve French
parent 85f2d6b44d
commit 9dc06558c2
3 changed files with 29 additions and 0 deletions
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7
fs/cifs/file.c
View File

@ -1944,6 +1944,9 @@ static void cifs_copy_cache_pages(struct address_space *mapping,
SetPageUptodate(page); SetPageUptodate(page);
unlock_page(page); unlock_page(page);
data += PAGE_CACHE_SIZE; data += PAGE_CACHE_SIZE;
/* add page to FS-Cache */
cifs_readpage_to_fscache(mapping->host, page);
} }
return; return;
} }
@ -2113,6 +2116,10 @@ static int cifs_readpage_worker(struct file *file, struct page *page,
flush_dcache_page(page); flush_dcache_page(page);
SetPageUptodate(page); SetPageUptodate(page);
/* send this page to the cache */
cifs_readpage_to_fscache(file->f_path.dentry->d_inode, page);
rc = 0; rc = 0;
io_error: io_error:

11
fs/cifs/fscache.c
View File

@ -140,6 +140,17 @@ int cifs_fscache_release_page(struct page *page, gfp_t gfp)
return 1; return 1;
} }
void __cifs_readpage_to_fscache(struct inode *inode, struct page *page)
{
int ret;
cFYI(1, "CIFS: readpage_to_fscache(fsc: %p, p: %p, i: %p",
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) void __cifs_fscache_invalidate_page(struct page *page, struct inode *inode)
{ {
struct cifsInodeInfo *cifsi = CIFS_I(inode); struct cifsInodeInfo *cifsi = CIFS_I(inode);

11
fs/cifs/fscache.h
View File

@ -51,6 +51,8 @@ extern void cifs_fscache_reset_inode_cookie(struct inode *);
extern void __cifs_fscache_invalidate_page(struct page *, struct inode *); extern void __cifs_fscache_invalidate_page(struct page *, struct inode *);
extern int cifs_fscache_release_page(struct page *page, gfp_t gfp); extern int cifs_fscache_release_page(struct page *page, gfp_t gfp);
extern void __cifs_readpage_to_fscache(struct inode *, struct page *);
static inline void cifs_fscache_invalidate_page(struct page *page, static inline void cifs_fscache_invalidate_page(struct page *page,
struct inode *inode) struct inode *inode)
{ {
@ -58,6 +60,13 @@ static inline void cifs_fscache_invalidate_page(struct page *page,
__cifs_fscache_invalidate_page(page, inode); __cifs_fscache_invalidate_page(page, inode);
} }
static inline void cifs_readpage_to_fscache(struct inode *inode,
struct page *page)
{
if (PageFsCache(page))
__cifs_readpage_to_fscache(inode, page);
}
#else /* CONFIG_CIFS_FSCACHE */ #else /* CONFIG_CIFS_FSCACHE */
static inline int cifs_fscache_register(void) { return 0; } static inline int cifs_fscache_register(void) { return 0; }
static inline void cifs_fscache_unregister(void) {} static inline void cifs_fscache_unregister(void) {}
@ -81,6 +90,8 @@ static inline void cifs_fscache_release_page(struct page *page, gfp_t gfp)
static inline int cifs_fscache_invalidate_page(struct page *page, static inline int cifs_fscache_invalidate_page(struct page *page,
struct inode *) {} struct inode *) {}
static inline void cifs_readpage_to_fscache(struct inode *inode,
struct page *page) {}
#endif /* CONFIG_CIFS_FSCACHE */ #endif /* CONFIG_CIFS_FSCACHE */