From 242f9dcb8ba6f68fcd217a119a7648a4f69290e9 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Sun, 14 Sep 2008 05:55:09 -0700 Subject: block: unify request timeout handling Right now SCSI and others do their own command timeout handling. Move those bits to the block layer. Instead of having a timer per command, we try to be a bit more clever and simply have one per-queue. This avoids the overhead of having to tear down and setup a timer for each command, so it will result in a lot less timer fiddling. Signed-off-by: Mike Anderson Signed-off-by: Jens Axboe --- block/elevator.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'block/elevator.c') diff --git a/block/elevator.c b/block/elevator.c index 8e3fc3afc77..a91fc59edd0 100644 --- a/block/elevator.c +++ b/block/elevator.c @@ -36,6 +36,8 @@ #include #include +#include "blk.h" + static DEFINE_SPINLOCK(elv_list_lock); static LIST_HEAD(elv_list); @@ -771,6 +773,12 @@ struct request *elv_next_request(struct request_queue *q) */ rq->cmd_flags |= REQ_STARTED; blk_add_trace_rq(q, rq, BLK_TA_ISSUE); + + /* + * We are now handing the request to the hardware, + * add the timeout handler + */ + blk_add_timer(rq); } if (!q->boundary_rq || q->boundary_rq == rq) { -- cgit v1.2.3