[ 3.8.y.z extended stable ] Patch "dm table: fix write same support" has been added to staging queue

[Kamal Mostafa]

This is a note to let you know that I have just added a patch titled

    dm table: fix write same support

to the linux-3.8.y-queue branch of the 3.8.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.8.y-queue

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.8.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

------

>From 1e4ac0f3f67d00a4c567610a644e262868ecedb6 Mon Sep 17 00:00:00 2001
From: Mike Snitzer <snitzer at redhat.com>
Date: Fri, 10 May 2013 14:37:16 +0100
Subject: dm table: fix write same support

commit dc019b21fb92d620a3b52ccecc135ac968a7c7ec upstream.

If device_not_write_same_capable() returns true then the iterate_devices
loop in dm_table_supports_write_same() should return false.

Reported-by: Bharata B Rao <bharata.rao at gmail.com>
Signed-off-by: Mike Snitzer <snitzer at redhat.com>
Signed-off-by: Alasdair G Kergon <agk at redhat.com>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 drivers/md/dm-table.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index daf25d0..62545f6 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -1443,7 +1443,7 @@ static bool dm_table_supports_write_same(struct dm_table *t)
 			return false;

 		if (!ti->type->iterate_devices ||
-		    !ti->type->iterate_devices(ti, device_not_write_same_capable, NULL))
+		    ti->type->iterate_devices(ti, device_not_write_same_capable, NULL))
 			return false;
 	}

--
1.8.1.2