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| author |   Martin K. Petersen <martin.petersen@oracle.com> | 2009-07-01 11:13:45 +1000 |
|---|---|---|
| committer |   NeilBrown <neilb@suse.de> | 2009-07-01 11:13:45 +1000 |
| commit | 8f6c2e4b325a8e9f8f47febb2fd0ed4fae7d45a9 (patch) | |
| tree | 6e383e2ec48b5c90fe07325a7f6ab38ea1a97dfa /drivers/md/raid10.c | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-2.6 (diff) | |
| download | linux-dev-8f6c2e4b325a8e9f8f47febb2fd0ed4fae7d45a9.tar.xz linux-dev-8f6c2e4b325a8e9f8f47febb2fd0ed4fae7d45a9.zip | |
md: Use new topology calls to indicate alignment and I/O sizes
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>
Diffstat (limited to 'drivers/md/raid10.c')
| -rw-r--r-- | drivers/md/raid10.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index ae12ceafe10c..7298a5e5a183 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -1151,8 +1151,8 @@ static int raid10_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) for ( ; mirror <= last ; mirror++) if ( !(p=conf->mirrors+mirror)->rdev) { - 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. @@ -2044,7 +2044,7 @@ raid10_size(mddev_t *mddev, sector_t sectors, int raid_disks) static int run(mddev_t *mddev) { conf_t *conf; - int i, disk_idx; + int i, disk_idx, chunk_size; mirror_info_t *disk; mdk_rdev_t *rdev; int nc, fc, fo; @@ -2130,6 +2130,14 @@ static int run(mddev_t *mddev) spin_lock_init(&conf->device_lock); mddev->queue->queue_lock = &conf->device_lock; + chunk_size = mddev->chunk_sectors << 9; + blk_queue_io_min(mddev->queue, chunk_size); + if (conf->raid_disks % conf->near_copies) + blk_queue_io_opt(mddev->queue, chunk_size * conf->raid_disks); + else + blk_queue_io_opt(mddev->queue, chunk_size * + (conf->raid_disks / conf->near_copies)); + list_for_each_entry(rdev, &mddev->disks, same_set) { disk_idx = rdev->raid_disk; if (disk_idx >= mddev->raid_disks @@ -2138,9 +2146,8 @@ static int run(mddev_t *mddev) disk = conf->mirrors + disk_idx; disk->rdev = rdev; - - 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. |