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md: convert to blk_alloc_disk/blk_cleanup_disk

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Convert the md driver to use the blk_alloc_disk and blk_cleanup_disk
helpers to simplify gendisk and request_queue allocation.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20210521055116.1053587-15-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-05-21 07:51:04 +02:00 committed by Jens Axboe
parent 74fe6ba923
commit 0f1d2e0643
1 changed files with 9 additions and 16 deletions
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25
drivers/md/md.c
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@ -5598,12 +5598,10 @@ static void md_free(struct kobject *ko)
if (mddev->sysfs_level)
sysfs_put(mddev->sysfs_level);
if (mddev->gendisk)
if (mddev->gendisk) {
del_gendisk(mddev->gendisk);
if (mddev->queue)
blk_cleanup_queue(mddev->queue);
if (mddev->gendisk)
put_disk(mddev->gendisk);
blk_cleanup_disk(mddev->gendisk);
}
percpu_ref_exit(&mddev->writes_pending);
bioset_exit(&mddev->bio_set);
@ -5711,20 +5709,13 @@ static int md_alloc(dev_t dev, char *name)
goto abort;
error = -ENOMEM;
mddev->queue = blk_alloc_queue(NUMA_NO_NODE);
if (!mddev->queue)
disk = blk_alloc_disk(NUMA_NO_NODE);
if (!disk)
goto abort;
blk_set_stacking_limits(&mddev->queue->limits);
disk = alloc_disk(1 << shift);
if (!disk) {
blk_cleanup_queue(mddev->queue);
mddev->queue = NULL;
goto abort;
}
disk->major = MAJOR(mddev->unit);
disk->first_minor = unit << shift;
disk->minors = 1 << shift;
if (name)
strcpy(disk->disk_name, name);
else if (partitioned)
@ -5733,7 +5724,9 @@ static int md_alloc(dev_t dev, char *name)
sprintf(disk->disk_name, "md%d", unit);
disk->fops = &md_fops;
disk->private_data = mddev;
disk->queue = mddev->queue;
mddev->queue = disk->queue;
blk_set_stacking_limits(&mddev->queue->limits);
blk_queue_write_cache(mddev->queue, true, true);
/* Allow extended partitions. This makes the
* 'mdp' device redundant, but we can't really