Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755273AbbLIJqW (ORCPT ); Wed, 9 Dec 2015 04:46:22 -0500 Received: from youngberry.canonical.com ([91.189.89.112]:45570 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755023AbbLIJmB (ORCPT ); Wed, 9 Dec 2015 04:42:01 -0500 From: Luis Henriques To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: NeilBrown , Luis Henriques Subject: [PATCH 3.16.y-ckt 118/126] md/raid0: apply base queue limits *before* disk_stack_limits Date: Wed, 9 Dec 2015 09:38:08 +0000 Message-Id: <1449653896-5236-119-git-send-email-luis.henriques@canonical.com> In-Reply-To: <1449653896-5236-1-git-send-email-luis.henriques@canonical.com> References: <1449653896-5236-1-git-send-email-luis.henriques@canonical.com> X-Extended-Stable: 3.16 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2107 Lines: 58 3.16.7-ckt21 -stable review patch. If anyone has any objections, please let me know. ------------------ From: NeilBrown commit 66eefe5de11db1e0d8f2edc3880d50e7c36a9d43 upstream. Calling e.g. blk_queue_max_hw_sectors() after calls to disk_stack_limits() discards the settings determined by disk_stack_limits(). So we need to make those calls first. Fixes: 199dc6ed5179 ("md/raid0: update queue parameter in a safer location.") Reported-by: Jes Sorensen Signed-off-by: NeilBrown [ luis: backported to 3.16: adjusted context ] Signed-off-by: Luis Henriques --- drivers/md/raid0.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c index 3d6b97b6dc6f..8f7dfc58f965 100644 --- a/drivers/md/raid0.c +++ b/drivers/md/raid0.c @@ -437,12 +437,6 @@ static int raid0_run(struct mddev *mddev) mddev->private = conf; } conf = mddev->private; - rdev_for_each(rdev, mddev) { - disk_stack_limits(mddev->gendisk, rdev->bdev, - rdev->data_offset << 9); - if (blk_queue_discard(bdev_get_queue(rdev->bdev))) - discard_supported = true; - } blk_queue_max_hw_sectors(mddev->queue, mddev->chunk_sectors); blk_queue_max_write_same_sectors(mddev->queue, mddev->chunk_sectors); blk_queue_max_discard_sectors(mddev->queue, mddev->chunk_sectors); @@ -451,6 +445,13 @@ static int raid0_run(struct mddev *mddev) blk_queue_io_opt(mddev->queue, (mddev->chunk_sectors << 9) * mddev->raid_disks); + rdev_for_each(rdev, mddev) { + disk_stack_limits(mddev->gendisk, rdev->bdev, + rdev->data_offset << 9); + if (blk_queue_discard(bdev_get_queue(rdev->bdev))) + discard_supported = true; + } + if (!discard_supported) queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD, mddev->queue); else -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/