This is a note to let you know that I've just added the patch titled
btrfs: Fix the wrong condition judgment about subset extent map
to the 3.17-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
btrfs-fix-the-wrong-condition-judgment-about-subset-extent-map.patch
and it can be found in the queue-3.17 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 32be3a1ac6d09576c57063c6c350ca36eaebdbd3 Mon Sep 17 00:00:00 2001
From: Qu Wenruo <quwenruo@xxxxxxxxxxxxxx>
Date: Mon, 22 Sep 2014 09:13:03 +0800
Subject: btrfs: Fix the wrong condition judgment about subset extent map
From: Qu Wenruo <quwenruo@xxxxxxxxxxxxxx>
commit 32be3a1ac6d09576c57063c6c350ca36eaebdbd3 upstream.
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@xxxxxxxxxxxxxx>
Signed-off-by: Chris Mason <clm@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/btrfs/inode.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -6528,7 +6528,7 @@ insert:
* 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
Patches currently in stable-queue which might be from quwenruo@xxxxxxxxxxxxxx are
queue-3.17/btrfs-fix-the-wrong-condition-judgment-about-subset-extent-map.patch
queue-3.17/btrfs-fix-a-deadlock-in-btrfs_dev_replace_finishing.patch
queue-3.17/btrfs-fix-and-enhance-merge_extent_mapping-to-insert-best-fitted-extent-map.patch
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