Patch "loop: return proper error from loop_queue_rq()" has been added to the 4.4-stable tree

Patch "loop: return proper error from loop_queue_rq()" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    loop: return proper error from loop_queue_rq()

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     loop-return-proper-error-from-loop_queue_rq.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From b4a567e8114327518c09f5632339a5954ab975a3 Mon Sep 17 00:00:00 2001
From: Omar Sandoval <osandov@fb.com>
Date: Mon, 14 Nov 2016 14:56:17 -0800
Subject: loop: return proper error from loop_queue_rq()

From: Omar Sandoval <osandov@fb.com>

commit b4a567e8114327518c09f5632339a5954ab975a3 upstream.

->queue_rq() should return one of the BLK_MQ_RQ_QUEUE_* constants, not
an errno.

Fixes: f4aa4c7bbac6 ("block: loop: convert to per-device workqueue")
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/block/loop.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -1657,7 +1657,7 @@ static int loop_queue_rq(struct blk_mq_h
 	blk_mq_start_request(bd->rq);
 
 	if (lo->lo_state != Lo_bound)
-		return -EIO;
+		return BLK_MQ_RQ_QUEUE_ERROR;
 
 	if (lo->use_dio && !(cmd->rq->cmd_flags & (REQ_FLUSH |
 					REQ_DISCARD)))


Patches currently in stable-queue which might be from osandov@fb.com are

queue-4.4/loop-return-proper-error-from-loop_queue_rq.patch