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    Subject[PATCH 4.4 41/60] loop: return proper error from loop_queue_rq()
    Date
    4.4-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    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)))

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