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bcache: don't pass a stack address to blkdev_get_by_path

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sb is just an on-stack pointer that can easily be reused by other calls.
Switch to use the bcache-wide bcache_kobj instead as there is no need to
claim per-bcache device anyway.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20230608110258.189493-13-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2023-06-08 13:02:40 +02:00 committed by Jens Axboe
parent c889d0793d
commit 29499ab060
1 changed files with 1 additions and 1 deletions
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2
drivers/md/bcache/super.c
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@ -2560,7 +2560,7 @@ static ssize_t register_bcache(struct kobject *k, struct kobj_attribute *attr,
err = "failed to open device";
bdev = blkdev_get_by_path(strim(path),
FMODE_READ|FMODE_WRITE|FMODE_EXCL,
sb, NULL);
bcache_kobj, NULL);
if (IS_ERR(bdev)) {
if (bdev == ERR_PTR(-EBUSY)) {
dev_t dev;