3.2.73-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: NeilBrown <neilb@xxxxxxxx>
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 <Jes.Sorensen@xxxxxxxxxx>
Signed-off-by: NeilBrown <neilb@xxxxxxxx>
[bwh: Backported to 3.2: the code being moved looks a little different]
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -358,16 +358,17 @@ static int raid0_run(struct mddev *mddev
}
conf = mddev->private;
- list_for_each_entry(rdev, &mddev->disks, same_set) {
- disk_stack_limits(mddev->gendisk, rdev->bdev,
- rdev->data_offset << 9);
- }
blk_queue_max_hw_sectors(mddev->queue, mddev->chunk_sectors);
blk_queue_io_min(mddev->queue, mddev->chunk_sectors << 9);
blk_queue_io_opt(mddev->queue,
(mddev->chunk_sectors << 9) * mddev->raid_disks);
+ list_for_each_entry(rdev, &mddev->disks, same_set) {
+ disk_stack_limits(mddev->gendisk, rdev->bdev,
+ rdev->data_offset << 9);
+ }
+
/* calculate array device size */
md_set_array_sectors(mddev, raid0_size(mddev, 0, 0));
--
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