From 2f19cad94cee3c9bd52d0c9ca584ef506302fb7c Mon Sep 17 00:00:00 2001 From: Chris Mason Date: Sun, 30 Nov 2014 08:56:33 -0500 Subject: 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 Reviewed-by: Josef Bacik Reported-by: Don A. Bailey cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds --- fs/btrfs/compression.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'fs/btrfs/compression.h') 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); -- cgit v1.2.3