This is a note to let you know that I've just added the patch titled
drbd: add missing part_round_stats to _drbd_start_io_acct
to the 3.4-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:
drbd-add-missing-part_round_stats-to-_drbd_start_io_acct.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From 72585d2428fa3a0daab02ebad1f41e5ef517dbaa Mon Sep 17 00:00:00 2001
From: Philipp Reisner <philipp.reis...@linbit.com>
Date: Thu, 23 Feb 2012 12:56:26 +0100
Subject: drbd: add missing part_round_stats to _drbd_start_io_acct
From: Philipp Reisner <philipp.reis...@linbit.com>
commit 72585d2428fa3a0daab02ebad1f41e5ef517dbaa upstream.
Without this, iostat frequently sees bogus svctime and >= 100% "utilization".
Signed-off-by: Philipp Reisner <philipp.reis...@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenb...@linbit.com>
Cc: Raoul Bhatia <ra...@bhatia.at>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/block/drbd/drbd_req.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/block/drbd/drbd_req.c
+++ b/drivers/block/drbd/drbd_req.c
@@ -37,6 +37,7 @@ static void _drbd_start_io_acct(struct d
const int rw = bio_data_dir(bio);
int cpu;
cpu = part_stat_lock();
+ part_round_stats(cpu, &mdev->vdisk->part0);
part_stat_inc(cpu, &mdev->vdisk->part0, ios[rw]);
part_stat_add(cpu, &mdev->vdisk->part0, sectors[rw], bio_sectors(bio));
part_inc_in_flight(&mdev->vdisk->part0, rw);
Patches currently in stable-queue which might be from
philipp.reis...@linbit.com are
queue-3.4/drbd-add-missing-part_round_stats-to-_drbd_start_io_acct.patch
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