From 6298be5ee4f9445a0d5003adc32a2d0967e336b8 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Thu, 24 Sep 2015 15:47:47 +1000 Subject: [PATCH] md/raid0: apply base queue limits *before* disk_stack_limits 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 Signed-off-by: Greg Kroah-Hartman --- drivers/md/raid0.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c index 4a13c3cb940b..0875e5e7e09a 100644 --- a/drivers/md/raid0.c +++ b/drivers/md/raid0.c @@ -431,12 +431,6 @@ static int raid0_run(struct mddev *mddev) struct md_rdev *rdev; bool discard_supported = false; - 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); @@ -445,6 +439,12 @@ 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 -- 2.50.1