diff options
| author | Jan Kara <jack@suse.cz> | 2014-02-24 16:39:52 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-02-24 14:46:32 -0800 |
| commit | 8b4922d3173d2eee7b43be8e5caec3ab7d30feff (patch) | |
| tree | 171fd625657933067d47b0ef0a29f10443a21c81 /block/cfq-iosched.c | |
| parent | bf36f9cfa6d3d129387b9d62f495d978ed4ade7c (diff) | |
| download | lwn-8b4922d3173d2eee7b43be8e5caec3ab7d30feff.tar.gz lwn-8b4922d3173d2eee7b43be8e5caec3ab7d30feff.zip | |
block: Stop abusing csd.list for fifo_time
Block layer currently abuses rq->csd.list.next for storing fifo_time.
That is a terrible hack and completely unnecessary as well. Union
achieves the same space saving in a cleaner way.
Signed-off-by: Jan Kara <jack@suse.cz>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jens Axboe <axboe@fb.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/cfq-iosched.c')
| -rw-r--r-- | block/cfq-iosched.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index 744833b630c6..5873e4ada9eb 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -2367,10 +2367,10 @@ cfq_merged_requests(struct request_queue *q, struct request *rq, * reposition in fifo if next is older than rq */ if (!list_empty(&rq->queuelist) && !list_empty(&next->queuelist) && - time_before(rq_fifo_time(next), rq_fifo_time(rq)) && + time_before(next->fifo_time, rq->fifo_time) && cfqq == RQ_CFQQ(next)) { list_move(&rq->queuelist, &next->queuelist); - rq_set_fifo_time(rq, rq_fifo_time(next)); + rq->fifo_time = next->fifo_time; } if (cfqq->next_rq == next) @@ -2814,7 +2814,7 @@ static struct request *cfq_check_fifo(struct cfq_queue *cfqq) return NULL; rq = rq_entry_fifo(cfqq->fifo.next); - if (time_before(jiffies, rq_fifo_time(rq))) + if (time_before(jiffies, rq->fifo_time)) rq = NULL; cfq_log_cfqq(cfqq->cfqd, cfqq, "fifo=%p", rq); @@ -3927,7 +3927,7 @@ static void cfq_insert_request(struct request_queue *q, struct request *rq) cfq_log_cfqq(cfqd, cfqq, "insert_request"); cfq_init_prio_data(cfqq, RQ_CIC(rq)); - rq_set_fifo_time(rq, jiffies + cfqd->cfq_fifo_expire[rq_is_sync(rq)]); + rq->fifo_time = jiffies + cfqd->cfq_fifo_expire[rq_is_sync(rq)]; list_add_tail(&rq->queuelist, &cfqq->fifo); cfq_add_rq_rb(rq); cfqg_stats_update_io_add(RQ_CFQG(rq), cfqd->serving_group, |