From f7d8ebf26d239ed7f9cc4b940ff240d78c4b61d1 Mon Sep 17 00:00:00 2001 From: Liang Chen Date: Fri, 24 Jan 2020 01:01:26 +0800 Subject: [PATCH] bcache: cached_dev_free needs to put the sb page [ Upstream commit e8547d42095e58bee658f00fef8e33d2a185c927 ] 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 Signed-off-by: Christoph Hellwig Signed-off-by: Coly Li Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin --- drivers/md/bcache/super.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index 64999c7a8033..b86cf7203340 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -1274,6 +1274,9 @@ 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); -- 2.34.1