Commit 32be3a1a authored Sep 22, 2014 by Qu Wenruo Committed by Chris Mason Oct 03, 2014

btrfs: Fix the wrong condition judgment about subset extent map



Previous commit: btrfs: Fix and enhance merge_extent_mapping() to insert
best fitted extent map
is using wrong condition to judgement whether the range is a subset of a
existing extent map.

This may cause bug in btrfs no-holes mode.

This patch will correct the judgment and fix the bug.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>

parent bbe90514

fs/btrfs/inode.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -6586,7 +6586,7 @@ struct extent_map btrfs_get_extent(struct inode inode, struct page *page,
		* extent causing the -EEXIST.
		*/
		if (start >= extent_map_end(existing) \|\|
		start + len <= existing->start) {
		start <= existing->start) {
		/*
		* The existing extent map is the one nearest to
		* the [start, start + len) range which overlaps