| Message ID | 50BC9BE0.30108@acm.org (mailing list archive) |
|---|---|
| State | Deferred, archived |
| Headers | show |
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 77e6eff..0ec0673 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -740,12 +740,7 @@ static void rq_completed(struct mapped_device *md, int rw, int run_queue) if (!md_in_flight(md)) wake_up(&md->wait); - /* - * Run this off this callpath, as drivers could invoke end_io while - * inside their request_fn (and holding the queue lock). Calling - * back into ->request_fn() could deadlock attempting to grab the - * queue lock again. - */ + /* run queue asynchronously to minimize time spent in soft-IRQ ctxt */ if (run_queue) blk_run_queue_async(md->queue);
Update a source code comment with the conclusions of the discussion of the patch that introduced this comment (commit a8c32a5). See also http://www.redhat.com/archives/dm-devel/2012-November/msg00003.html. Signed-off-by: Bart Van Assche <bvanassche@acm.org> Cc: Jens Axboe <axboe@kernel.dk> Cc: Alasdair G Kergon <agk@redhat.com> Cc: Jun'ichi Nomura <j-nomura@ce.jp.nec.com> Cc: Tejun Heo <tj@kernel.org> Cc: stable@vger.kernel.org --- drivers/md/dm.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-)