diff options
| author |   NeilBrown <neilb@suse.de> | 2015-11-04 15:20:34 +0000 |
|---|---|---|
| committer |   Al Viro <viro@zeniv.linux.org.uk> | 2015-11-11 02:08:17 -0500 |
| commit | 95201a40604791bc4a2e8d066429be89fb82b46d (patch) | |
| tree | ef88b895c4e6b8bef8efd28d9ea852cb63814dc7 /fs/cachefiles/namei.c | |
| parent | FS-Cache: Don't override netfs's primary_index if registering failed (diff) | |
| download | wireguard-linux-95201a40604791bc4a2e8d066429be89fb82b46d.tar.xz wireguard-linux-95201a40604791bc4a2e8d066429be89fb82b46d.zip | |
cachefiles: perform test on s_blocksize when opening cache file.
cachefiles requires that s_blocksize in the cache is not greater than
PAGE_SIZE, and performs the check every time a block is accessed.
Move the test to the place where the file is "opened", where other
file-validity tests are performed.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/cachefiles/namei.c')
| -rw-r--r-- | fs/cachefiles/namei.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c index fc1056f5c96a..c4b893453e0e 100644 --- a/fs/cachefiles/namei.c +++ b/fs/cachefiles/namei.c @@ -655,6 +655,8 @@ lookup_again: aops = d_backing_inode(object->dentry)->i_mapping->a_ops; if (!aops->bmap) goto check_error; + if (object->dentry->d_sb->s_blocksize > PAGE_SIZE) + goto check_error; object->backer = object->dentry; } else { |