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authorChristoph Hellwig <hch@lst.de>2016-08-04 17:10:00 +0300
committerJens Axboe <axboe@fb.com>2016-08-04 23:19:16 +0300
commitf0225cacfe7e69ff3234a125aeb0f3d65077835c (patch)
treee61f490b47a997149aa391b301fa3f3b463d66e1 /drivers/block/loop.c
parentc0f3fd2b387448d67ae83c4ce1cc69da375b9186 (diff)
downloadlinux-f0225cacfe7e69ff3234a125aeb0f3d65077835c.tar.xz
loop: don't try to use AIO for discards
Fix a fat-fingered conversion to the req_op accessors, and also use a switch statement to make it more obvious what is being checked. Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Dave Chinner <david@fromorbit.com> Fixes: c2df40 ("drivers: use req op accessor"); Reviewed-by: Ming Lei <ming.lei@canonical.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/block/loop.c')
-rw-r--r--drivers/block/loop.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 075377eee0c0..91c2c881cb49 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -1659,11 +1659,15 @@ static int loop_queue_rq(struct blk_mq_hw_ctx *hctx,
if (lo->lo_state != Lo_bound)
return -EIO;
- if (lo->use_dio && (req_op(cmd->rq) != REQ_OP_FLUSH ||
- req_op(cmd->rq) == REQ_OP_DISCARD))
- cmd->use_aio = true;
- else
+ switch (req_op(cmd->rq)) {
+ case REQ_OP_FLUSH:
+ case REQ_OP_DISCARD:
cmd->use_aio = false;
+ break;
+ default:
+ cmd->use_aio = lo->use_dio;
+ break;
+ }
queue_kthread_work(&lo->worker, &cmd->work);