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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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9
drivers/md/raid0.c
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@@ -170,8 +170,8 @@ static int create_strip_zones(mddev_t *mddev)
}
dev[j] = rdev1;
blk_queue_stack_limits(mddev->queue,
rdev1->bdev->bd_disk->queue);
disk_stack_limits(mddev->gendisk, rdev1->bdev,
rdev1->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.
@@ -250,6 +250,11 @@ static int create_strip_zones(mddev_t *mddev)
mddev->chunk_sectors << 9);
goto abort;
}
blk_queue_io_min(mddev->queue, mddev->chunk_sectors << 9);
blk_queue_io_opt(mddev->queue,
(mddev->chunk_sectors << 9) * mddev->raid_disks);
printk(KERN_INFO "raid0: done.\n");
mddev->private = conf;
return 0;