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| author | Suresh Jayaraman <sjayaraman@suse.de> | 2010-07-05 18:13:00 +0530 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2010-08-02 12:40:36 +0000 |
| commit | 85f2d6b44d7e83bdeab87df910127c6f296866cf (patch) | |
| tree | 238389c1726e212a80336551809b44b0bbedec38 /fs/cifs/cache.c | |
| parent | 9451a9a52f91a4c171cfaca2f6d7a2ce91867b8d (diff) | |
| download | lwn-85f2d6b44d7e83bdeab87df910127c6f296866cf.tar.gz lwn-85f2d6b44d7e83bdeab87df910127c6f296866cf.zip | |
cifs: FS-Cache page management
Takes care of invalidation and release of FS-Cache marked pages and also
invalidation of the FsCache page flag when the inode is removed.
Signed-off-by: Suresh Jayaraman <sjayaraman@suse.de>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs/cache.c')
| -rw-r--r-- | fs/cifs/cache.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/fs/cifs/cache.c b/fs/cifs/cache.c index b2649cfd3a04..224d7bbd1fcc 100644 --- a/fs/cifs/cache.c +++ b/fs/cifs/cache.c @@ -290,6 +290,36 @@ fscache_checkaux cifs_fscache_inode_check_aux(void *cookie_netfs_data, return FSCACHE_CHECKAUX_OKAY; } +static void cifs_fscache_inode_now_uncached(void *cookie_netfs_data) +{ + struct cifsInodeInfo *cifsi = cookie_netfs_data; + struct pagevec pvec; + pgoff_t first; + int loop, nr_pages; + + pagevec_init(&pvec, 0); + first = 0; + + cFYI(1, "cifs inode 0x%p now uncached", cifsi); + + for (;;) { + nr_pages = pagevec_lookup(&pvec, + cifsi->vfs_inode.i_mapping, first, + PAGEVEC_SIZE - pagevec_count(&pvec)); + if (!nr_pages) + break; + + for (loop = 0; loop < nr_pages; loop++) + ClearPageFsCache(pvec.pages[loop]); + + first = pvec.pages[nr_pages - 1]->index + 1; + + pvec.nr = nr_pages; + pagevec_release(&pvec); + cond_resched(); + } +} + const struct fscache_cookie_def cifs_fscache_inode_object_def = { .name = "CIFS.uniqueid", .type = FSCACHE_COOKIE_TYPE_DATAFILE, @@ -297,4 +327,5 @@ const struct fscache_cookie_def cifs_fscache_inode_object_def = { .get_attr = cifs_fscache_inode_get_attr, .get_aux = cifs_fscache_inode_get_aux, .check_aux = cifs_fscache_inode_check_aux, + .now_uncached = cifs_fscache_inode_now_uncached, }; |