From mboxrd@z Thu Jan 1 00:00:00 1970 From: Liang Chen Subject: [PATCH 1/2] [PATCH] bcache: cached_dev_free needs to put the sb page Date: Fri, 6 Dec 2019 16:55:42 +0800 Message-ID: <1575622543-22470-1-git-send-email-liangchen.linux@gmail.com> Return-path: Sender: linux-kernel-owner@vger.kernel.org To: colyli@suse.de Cc: kent.overstreet@gmail.com, linux-kernel@vger.kernel.org, linux-bcache@vger.kernel.org, Liang Chen List-Id: linux-bcache@vger.kernel.org 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 --- 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 77e9869345e7..a573ce1d85aa 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -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); -- 2.17.0