diff options
| author |   Chris Mason <clm@fb.com> | 2014-11-30 08:56:33 -0500 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2014-11-30 09:33:51 -0800 |
| commit | 2f19cad94cee3c9bd52d0c9ca584ef506302fb7c (patch) | |
| tree | ca1a69874842c86904ff6b66cb7430c818f2baa4 /fs/btrfs/compression.h | |
| parent | Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip (diff) | |
| download | wireguard-linux-2f19cad94cee3c9bd52d0c9ca584ef506302fb7c.tar.xz wireguard-linux-2f19cad94cee3c9bd52d0c9ca584ef506302fb7c.zip | |
btrfs: zero out left over bytes after processing compression streams
Don Bailey noticed that our page zeroing for compression at end-io time
isn't complete. This reworks a patch from Linus to push the zeroing
into the zlib and lzo specific functions instead of trying to handle the
corners inside btrfs_decompress_buf2page
Signed-off-by: Chris Mason <clm@fb.com>
Reviewed-by: Josef Bacik <jbacik@fb.com>
Reported-by: Don A. Bailey <donb@securitymouse.com>
cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/btrfs/compression.h')
| -rw-r--r-- | fs/btrfs/compression.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/btrfs/compression.h b/fs/btrfs/compression.h index 0c803b4fbf93..d181f70caae0 100644 --- a/fs/btrfs/compression.h +++ b/fs/btrfs/compression.h @@ -45,7 +45,9 @@ int btrfs_submit_compressed_write(struct inode *inode, u64 start, unsigned long nr_pages); int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio, int mirror_num, unsigned long bio_flags); - +void btrfs_clear_biovec_end(struct bio_vec *bvec, int vcnt, + unsigned long pg_index, + unsigned long pg_offset); struct btrfs_compress_op { struct list_head *(*alloc_workspace)(void); |