From c6a632a2b610c1bc123f1d258d688e8fe5cc70dd Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Tue, 8 May 2007 00:26:34 -0700 Subject: as: fix antic_expire check Fix units mismatch (jiffies vs msecs) in as-iosched.c, spotted by Xiaoning Ding . Signed-off-by: Nick Piggin Cc: Jens Axboe Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- block/as-iosched.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'block') diff --git a/block/as-iosched.c b/block/as-iosched.c index ef126277b4b3..640aa839d63f 100644 --- a/block/as-iosched.c +++ b/block/as-iosched.c @@ -569,7 +569,7 @@ static void as_update_iohist(struct as_data *ad, struct as_io_context *aic, static int as_close_req(struct as_data *ad, struct as_io_context *aic, struct request *rq) { - unsigned long delay; /* milliseconds */ + unsigned long delay; /* jiffies */ sector_t last = ad->last_sector[ad->batch_data_dir]; sector_t next = rq->sector; sector_t delta; /* acceptable close offset (in sectors) */ @@ -578,11 +578,11 @@ static int as_close_req(struct as_data *ad, struct as_io_context *aic, if (ad->antic_status == ANTIC_OFF || !ad->ioc_finished) delay = 0; else - delay = ((jiffies - ad->antic_start) * 1000) / HZ; + delay = jiffies - ad->antic_start; if (delay == 0) delta = 8192; - else if (delay <= 20 && delay <= ad->antic_expire) + else if (delay <= (20 * HZ / 1000) && delay <= ad->antic_expire) delta = 8192 << delay; else return 1; -- cgit v1.2.3