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md: Use new topology calls to indicate alignment and I/O sizes

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Switch MD over to the new disk_stack_limits() function which checks for
aligment and adjusts preferred I/O sizes when stacking.

Also indicate preferred I/O sizes where applicable.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
Martin K. Petersen
2009-07-01 11:13:45 +10:00
committed by NeilBrown
parent 5a4f13fad1
commit 8f6c2e4b32
6 changed files with 39 additions and 19 deletions
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4
drivers/md/linear.c
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@@ -166,8 +166,8 @@ static linear_conf_t *linear_conf(mddev_t *mddev, int raid_disks)
rdev->sectors = sectors * mddev->chunk_sectors;
}
blk_queue_stack_limits(mddev->queue,
rdev->bdev->bd_disk->queue);
disk_stack_limits(mddev->gendisk, rdev->bdev,
rdev->data_offset << 9);
/* as we don't honour merge_bvec_fn, we must never risk
* violating it, so limit ->max_sector to one PAGE, as
* a one page request is never in violation.