From: Liu Bo <liubo2009@cn.fujitsu.com>
Date: Thu, 16 Feb 2012 10:34:36 +0000 (+0800)
Subject: Btrfs: be less strict on finding next node in clear_extent_bit
X-Git-Tag: firefly_0821_release~3680^2~3391^2~8
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=692e5759a43b916f0b66bcb39b2957499992381e;p=firefly-linux-kernel-4.4.55.git

Btrfs: be less strict on finding next node in clear_extent_bit

In clear_extent_bit, it is enough that next node is adjacent in tree level.

Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
---

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 37259ff5cd71..45ca8f9b0d61 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -582,8 +582,7 @@ next:
 	if (start <= end && next_node) {
 		state = rb_entry(next_node, struct extent_state,
 				 rb_node);
-		if (state->start == start)
-			goto hit_next;
+		goto hit_next;
 	}
 	goto search_again;