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Message-ID: <20131030122022.20862.97997.stgit@gklab-154-222.igk.intel.com> Date: Wed, 30 Oct 2013 13:20:22 +0100 From: Pawel Baldysiak <pawel.baldysiak@...el.com> To: neilb@...e.de Cc: linux-raid@...r.kernel.org, shli@...nel.org, linux-kernel@...r.kernel.org Subject: [PATCH] raid0: Set discard_granularity to correct value after reshape. In case of reshape of raid0 through raid4 a value of discard_granularity will be set to stripe size. MD driver should re-set this value to correct one when migration will be finished. Otherwise array will be left with wrong value and discard operations will not work properly. Signed-off-by: Pawel Baldysiak <pawel.baldysiak@...el.com> Cc: Shaohua Li <shli@...nel.org> --- drivers/md/raid0.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c index c4d420b..807ca3a 100644 --- a/drivers/md/raid0.c +++ b/drivers/md/raid0.c @@ -266,6 +266,8 @@ static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf) } mddev->queue->backing_dev_info.congested_fn = raid0_congested; mddev->queue->backing_dev_info.congested_data = mddev; + mddev->queue->limits.discard_granularity = + queue_logical_block_size(mddev->queue); /* * now since we have the hard sector sizes, we can make sure -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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