From: Sidong Yang realwakka@gmail.com
[ Upstream commit 44bee215f72f13874c0e734a0712c2e3264c0108 ]
Fix a warning reported by smatch that ret could be returned without initialized. The dedupe operations are supposed to to return 0 for a 0 length range but the caller does not pass olen == 0. To keep this behaviour and also fix the warning initialize ret to 0.
Reviewed-by: Filipe Manana fdmanana@suse.com Signed-off-by: Sidong Yang realwakka@gmail.com Reviewed-by: David Sterba dsterba@suse.com Signed-off-by: David Sterba dsterba@suse.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/btrfs/reflink.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/btrfs/reflink.c b/fs/btrfs/reflink.c index 9b0814318e726..c71e49782e86d 100644 --- a/fs/btrfs/reflink.c +++ b/fs/btrfs/reflink.c @@ -649,7 +649,7 @@ static int btrfs_extent_same_range(struct inode *src, u64 loff, u64 len, static int btrfs_extent_same(struct inode *src, u64 loff, u64 olen, struct inode *dst, u64 dst_loff) { - int ret; + int ret = 0; u64 i, tail_len, chunk_count; struct btrfs_root *root_dst = BTRFS_I(dst)->root;