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authorChris Mason <clm@fb.com>2014-11-30 16:56:33 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2014-11-30 20:33:51 +0300
commit2f19cad94cee3c9bd52d0c9ca584ef506302fb7c (patch)
treeca1a69874842c86904ff6b66cb7430c818f2baa4 /fs/btrfs/compression.h
parent7a5a4f978750756755dc839014e13d1b088ccc8e (diff)
downloadlinux-2f19cad94cee3c9bd52d0c9ca584ef506302fb7c.tar.xz
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.h4
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);