Commit e8547d42 authored Jan 24, 2020 by Liang Chen Committed by Jens Axboe Jan 23, 2020

bcache: cached_dev_free needs to put the sb page



Same as cache device, the buffer page needs to be put while
freeing cached_dev.  Otherwise a page would be leaked every
time a cached_dev is stopped.

Signed-off-by: Liang Chen <liangchen.linux@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

parent 7454049e

drivers/md/bcache/super.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -1275,6 +1275,9 @@ static void cached_dev_free(struct closure *cl)

		mutex_unlock(&bch_register_lock);

		if (dc->sb_bio.bi_inline_vecs[0].bv_page)
		put_page(bio_first_page_all(&dc->sb_bio));

		if (!IS_ERR_OR_NULL(dc->bdev))
		blkdev_put(dc->bdev, FMODE_READ\|FMODE_WRITE\|FMODE_EXCL);

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