From: Liang Chen liangchen.linux@gmail.com
[ 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 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 Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- 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 73b1df3..1ee0c80 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);