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md: use set_capacity_and_notify

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Use set_capacity_and_notify to set the size of both the disk and block
device.  This also gets the uevent notifications for the resize for free.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Song Liu <song@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2020-11-16 15:57:11 +01:00 committed by Jens Axboe
parent dc2985a8d5
commit 2c247c5169
3 changed files with 13 additions and 20 deletions
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6
drivers/md/md-cluster.c
View File

@ -581,8 +581,7 @@ static int process_recvd_msg(struct mddev *mddev, struct cluster_msg *msg)
process_metadata_update(mddev, msg);
break;
case CHANGE_CAPACITY:
set_capacity(mddev->gendisk, mddev->array_sectors);
revalidate_disk_size(mddev->gendisk, true);
set_capacity_and_notify(mddev->gendisk, mddev->array_sectors);
break;
case RESYNCING:
set_bit(MD_RESYNCING_REMOTE, &mddev->recovery);
@ -1296,8 +1295,7 @@ static void update_size(struct mddev *mddev, sector_t old_dev_sectors)
if (ret)
pr_err("%s:%d: failed to send CHANGE_CAPACITY msg\n",
__func__, __LINE__);
set_capacity(mddev->gendisk, mddev->array_sectors);
revalidate_disk_size(mddev->gendisk, true);
set_capacity_and_notify(mddev->gendisk, mddev->array_sectors);
} else {
/* revert to previous sectors */
ret = mddev->pers->resize(mddev, old_dev_sectors);

3
drivers/md/md-linear.c
View File

@ -200,9 +200,8 @@ static int linear_add(struct mddev *mddev, struct md_rdev *rdev)
"copied raid_disks doesn't match mddev->raid_disks");
rcu_assign_pointer(mddev->private, newconf);
md_set_array_sectors(mddev, linear_size(mddev, 0, 0));
set_capacity(mddev->gendisk, mddev->array_sectors);
set_capacity_and_notify(mddev->gendisk, mddev->array_sectors);
mddev_resume(mddev);
revalidate_disk_size(mddev->gendisk, true);
kfree_rcu(oldconf, rcu);
return 0;
}

24
drivers/md/md.c
View File

@ -5355,10 +5355,9 @@ array_size_store(struct mddev *mddev, const char *buf, size_t len)
if (!err) {
mddev->array_sectors = sectors;
if (mddev->pers) {
set_capacity(mddev->gendisk, mddev->array_sectors);
revalidate_disk_size(mddev->gendisk, true);
}
if (mddev->pers)
set_capacity_and_notify(mddev->gendisk,
mddev->array_sectors);
}
mddev_unlock(mddev);
return err ?: len;
@ -6108,8 +6107,7 @@ int do_md_run(struct mddev *mddev)
md_wakeup_thread(mddev->thread);
md_wakeup_thread(mddev->sync_thread); /* possibly kick off a reshape */
set_capacity(mddev->gendisk, mddev->array_sectors);
revalidate_disk_size(mddev->gendisk, true);
set_capacity_and_notify(mddev->gendisk, mddev->array_sectors);
clear_bit(MD_NOT_READY, &mddev->flags);
mddev->changed = 1;
kobject_uevent(&disk_to_dev(mddev->gendisk)->kobj, KOBJ_CHANGE);
@ -6424,10 +6422,9 @@ static int do_md_stop(struct mddev *mddev, int mode,
if (rdev->raid_disk >= 0)
sysfs_unlink_rdev(mddev, rdev);
set_capacity(disk, 0);
set_capacity_and_notify(disk, 0);
mutex_unlock(&mddev->open_mutex);
mddev->changed = 1;
revalidate_disk_size(disk, true);
if (mddev->ro)
mddev->ro = 0;
@ -7258,8 +7255,8 @@ static int update_size(struct mddev *mddev, sector_t num_sectors)
if (mddev_is_clustered(mddev))
md_cluster_ops->update_size(mddev, old_dev_sectors);
else if (mddev->queue) {
set_capacity(mddev->gendisk, mddev->array_sectors);
revalidate_disk_size(mddev->gendisk, true);
set_capacity_and_notify(mddev->gendisk,
mddev->array_sectors);
}
}
return rv;
@ -9036,10 +9033,9 @@ void md_do_sync(struct md_thread *thread)
mddev_lock_nointr(mddev);
md_set_array_sectors(mddev, mddev->pers->size(mddev, 0, 0));
mddev_unlock(mddev);
if (!mddev_is_clustered(mddev)) {
set_capacity(mddev->gendisk, mddev->array_sectors);
revalidate_disk_size(mddev->gendisk, true);
}
if (!mddev_is_clustered(mddev))
set_capacity_and_notify(mddev->gendisk,
mddev->array_sectors);
}
spin_lock(&mddev->lock);