From: Liu Bo <bo.liu@linux.alibaba.com>
Date: Fri, 18 May 2018 03:00:20 +0000 (+0800)
Subject: Btrfs: use more straightforward extent_buffer_uptodate check
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=e6a1d6fd276965db0ca91e91dffc0a6fb7d89254;p=openwrt%2Fstaging%2Fblogic.git

Btrfs: use more straightforward extent_buffer_uptodate check

If parent_transid "0" is passed to btrfs_buffer_uptodate(),
btrfs_buffer_uptodate() is equivalent to extent_buffer_uptodate(), but
extent_buffer_uptodate() is preferred since we don't have to look into
verify_parent_transid().

Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
---

diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 820226d42d5d..46afc9743ad0 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -2445,7 +2445,7 @@ read_block_for_search(struct btrfs_root *root, struct btrfs_path *p,
 		 * and give up so that our caller doesn't loop forever
 		 * on our EAGAINs.
 		 */
-		if (!btrfs_buffer_uptodate(tmp, 0, 0))
+		if (!extent_buffer_uptodate(tmp))
 			ret = -EIO;
 		free_extent_buffer(tmp);
 	} else {