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bcache: move the del_gendisk call out of bcache_device_free

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Let the callers call del_gendisk so that we can check if add_disk
has been called properly for the cached device case instead of relying
on the block layer internal GENHD_FL_UP flag.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Coly Li <colyli@suse.de>
Link: https://lore.kernel.org/r/20210809064028.1198327-8-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-08-09 08:40:27 +02:00 committed by Jens Axboe
parent 224b068322
commit b75f4aed88
1 changed files with 4 additions and 6 deletions
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10
drivers/md/bcache/super.c
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@ -885,11 +885,6 @@ static void bcache_device_free(struct bcache_device *d)
bcache_device_detach(d);
if (disk) {
bool disk_added = (disk->flags & GENHD_FL_UP) != 0;
if (disk_added)
del_gendisk(disk);
blk_cleanup_disk(disk);
ida_simple_remove(&bcache_device_idx,
first_minor_to_idx(disk->first_minor));
@ -1371,8 +1366,10 @@ static void cached_dev_free(struct closure *cl)
mutex_lock(&bch_register_lock);
if (atomic_read(&dc->running))
if (atomic_read(&dc->running)) {
bd_unlink_disk_holder(dc->bdev, dc->disk.disk);
del_gendisk(dc->disk.disk);
}
bcache_device_free(&dc->disk);
list_del(&dc->list);
@ -1518,6 +1515,7 @@ static void flash_dev_free(struct closure *cl)
mutex_lock(&bch_register_lock);
atomic_long_sub(bcache_dev_sectors_dirty(d),
&d->c->flash_dev_dirty_sectors);
del_gendisk(d->disk);
bcache_device_free(d);
mutex_unlock(&bch_register_lock);
kobject_put(&d->kobj);