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md: move allocation of ->queue from mddev_find to md_probe 

It is more balanced to just do simple initialisation in mddev_find,
which allocates and links a new md device, and leave all the
more sophisticated allocation to md_probe (which calls mddev_find).
md_probe already allocated the gendisk.  It should allocate the
queue too.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown 2009-01-09 08:31:08 +11:00
parent cd2ac9321c
commit 8b76539823
1 changed files with 17 additions and 11 deletions
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28
drivers/md/md.c
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@ -221,7 +221,9 @@ static void mddev_put(mddev_t *mddev)
if (!mddev->raid_disks && list_empty(&mddev->disks)) {
list_del(&mddev->all_mddevs);
spin_unlock(&all_mddevs_lock);
blk_cleanup_queue(mddev->queue);
if (mddev->queue)
blk_cleanup_queue(mddev->queue);
mddev->queue = NULL;
if (mddev->sysfs_state)
sysfs_put(mddev->sysfs_state);
mddev->sysfs_state = NULL;
@ -275,16 +277,6 @@ static mddev_t * mddev_find(dev_t unit)
new->resync_max = MaxSector;
new->level = LEVEL_NONE;
new->queue = blk_alloc_queue(GFP_KERNEL);
if (!new->queue) {
kfree(new);
return NULL;
}
/* Can be unlocked because the queue is new: no concurrency */
queue_flag_set_unlocked(QUEUE_FLAG_CLUSTER, new->queue);
blk_queue_make_request(new->queue, md_fail_request);
goto retry;
}
@ -3493,9 +3485,23 @@ static struct kobject *md_probe(dev_t dev, int *part, void *data)
mddev_put(mddev);
return NULL;
}
mddev->queue = blk_alloc_queue(GFP_KERNEL);
if (!mddev->queue) {
mutex_unlock(&disks_mutex);
mddev_put(mddev);
return NULL;
}
/* Can be unlocked because the queue is new: no concurrency */
queue_flag_set_unlocked(QUEUE_FLAG_CLUSTER, mddev->queue);
blk_queue_make_request(mddev->queue, md_fail_request);
disk = alloc_disk(1 << shift);
if (!disk) {
mutex_unlock(&disks_mutex);
blk_cleanup_queue(mddev->queue);
mddev->queue = NULL;
mddev_put(mddev);
return NULL;
}