Re: [Linux-stable-mirror] [PATCH for < 4.9] rbd: use GFP_NOIO for parent stat and data requests

On Sat, Nov 11, 2017 at 11:41:41AM +0100, Ilya Dryomov wrote:

rbd_img_obj_exists_submit() and rbd_img_obj_parent_read_full() are on the writeback path for cloned images -- we attempt a stat on the parent object to see if it exists and potentially read it in to call copyup. GFP_NOIO should be used instead of GFP_KERNEL here.

Cc: stable@vger.kernel.org Link: http://tracker.ceph.com/issues/22014 Signed-off-by: Ilya Dryomov idryomov@gmail.com Reviewed-by: David Disseldorp ddiss@suse.de [idryomov@gmail.com: backport to < 4.9: context]

---

drivers/block/rbd.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

Now queued up, thanks for the backport.

greg k-h