Commit 32be3a1a authored by Qu Wenruo's avatar Qu Wenruo Committed by Chris Mason

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: default avatarQu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: default avatarChris Mason <clm@fb.com>
parent bbe90514
...@@ -6586,7 +6586,7 @@ struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, ...@@ -6586,7 +6586,7 @@ struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page,
* extent causing the -EEXIST. * extent causing the -EEXIST.
*/ */
if (start >= extent_map_end(existing) || if (start >= extent_map_end(existing) ||
start + len <= existing->start) { start <= existing->start) {
/* /*
* The existing extent map is the one nearest to * The existing extent map is the one nearest to
* the [start, start + len) range which overlaps * the [start, start + len) range which overlaps
......
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