[PATCH 3.4 078/214] fs: cachefiles: add support for large files in filesystem caching

From: Greg Kroah-Hartman
Date: Thu Jun 05 2014 - 00:59:30 EST


3.4-stable review patch. If anyone has any objections, please let me know.

------------------

From: Justin Lecher <jlec@xxxxxxxxxx>

commit 98c350cda2c14a343d34ea01a3d9c24fea5ec66d upstream.

Support the caching of large files.

Addresses https://bugzilla.kernel.org/show_bug.cgi?id=31182

Signed-off-by: Justin Lecher <jlec@xxxxxxxxxx>
Signed-off-by: Suresh Jayaraman <sjayaraman@xxxxxxxx>
Tested-by: Suresh Jayaraman <sjayaraman@xxxxxxxx>
Acked-by: David Howells <dhowells@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
[bwh: Backported to 3.2:
- Adjust context
- dentry_open() takes dentry and vfsmount pointers, not a path pointer]
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
Cc: Rui Xiang <rui.xiang@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
fs/cachefiles/rdwr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/cachefiles/rdwr.c
+++ b/fs/cachefiles/rdwr.c
@@ -918,7 +918,7 @@ int cachefiles_write_page(struct fscache
* own time */
dget(object->backer);
mntget(cache->mnt);
- file = dentry_open(object->backer, cache->mnt, O_RDWR,
+ file = dentry_open(object->backer, cache->mnt, O_RDWR | O_LARGEFILE,
cache->cache_cred);
if (IS_ERR(file)) {
ret = PTR_ERR(file);


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