This is a note to let you know that I've just added the patch titled
dm array: fix bug in growing array
to the 3.10-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:
dm-array-fix-bug-in-growing-array.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 9c1d4de56066e4d6abc66ec188faafd7b303fb08 Mon Sep 17 00:00:00 2001
From: Joe Thornber <ejt@xxxxxxxxxx>
Date: Wed, 30 Oct 2013 11:19:59 +0000
Subject: dm array: fix bug in growing array
From: Joe Thornber <ejt@xxxxxxxxxx>
commit 9c1d4de56066e4d6abc66ec188faafd7b303fb08 upstream.
Entries would be lost if the old tail block was partially filled.
Signed-off-by: Joe Thornber <ejt@xxxxxxxxxx>
Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/md/persistent-data/dm-array.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/md/persistent-data/dm-array.c
+++ b/drivers/md/persistent-data/dm-array.c
@@ -509,15 +509,18 @@ static int grow_add_tail_block(struct re
static int grow_needs_more_blocks(struct resize *resize)
{
int r;
+ unsigned old_nr_blocks = resize->old_nr_full_blocks;
if (resize->old_nr_entries_in_last_block > 0) {
+ old_nr_blocks++;
+
r = grow_extend_tail_block(resize, resize->max_entries);
if (r)
return r;
}
r = insert_full_ablocks(resize->info, resize->size_of_block,
- resize->old_nr_full_blocks,
+ old_nr_blocks,
resize->new_nr_full_blocks,
resize->max_entries, resize->value,
&resize->root);
Patches currently in stable-queue which might be from ejt@xxxxxxxxxx are
queue-3.10/dm-cache-fix-a-race-condition-between-queuing-new-migrations-and-quiescing-for-a-shutdown.patch
queue-3.10/dm-array-fix-bug-in-growing-array.patch
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