From ad5ebd2fa2557b04a653bb3c3377a47da8f9b8e9 Mon Sep 17 00:00:00 2001
From: Randy Dunlap <randy.dunlap@oracle.com>
Date: Wed, 11 Nov 2009 13:47:45 +0100
Subject: [PATCH] block: jiffies fixes

Use HZ-independent calculation of milliseconds.
Add jiffies.h where it was missing since functions or macros
from it are used.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---
 block/blk-settings.c | 3 ++-
 block/bsg.c          | 3 ++-
 block/cfq-iosched.c  | 1 +
 3 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/block/blk-settings.c b/block/blk-settings.c
index 7f986cafacd5..1ebc1fdb9144 100644
--- a/block/blk-settings.c
+++ b/block/blk-settings.c
@@ -8,6 +8,7 @@
 #include <linux/blkdev.h>
 #include <linux/bootmem.h>	/* for max_pfn/max_low_pfn */
 #include <linux/gcd.h>
+#include <linux/jiffies.h>
 
 #include "blk.h"
 
@@ -144,7 +145,7 @@ void blk_queue_make_request(struct request_queue *q, make_request_fn *mfn)
 	q->nr_batching = BLK_BATCH_REQ;
 
 	q->unplug_thresh = 4;		/* hmm */
-	q->unplug_delay = (3 * HZ) / 1000;	/* 3 milliseconds */
+	q->unplug_delay = msecs_to_jiffies(3);	/* 3 milliseconds */
 	if (q->unplug_delay == 0)
 		q->unplug_delay = 1;
 
diff --git a/block/bsg.c b/block/bsg.c
index 0676301f16d0..a9fd2d84b53a 100644
--- a/block/bsg.c
+++ b/block/bsg.c
@@ -15,6 +15,7 @@
 #include <linux/blkdev.h>
 #include <linux/poll.h>
 #include <linux/cdev.h>
+#include <linux/jiffies.h>
 #include <linux/percpu.h>
 #include <linux/uio.h>
 #include <linux/idr.h>
@@ -197,7 +198,7 @@ static int blk_fill_sgv4_hdr_rq(struct request_queue *q, struct request *rq,
 	rq->cmd_len = hdr->request_len;
 	rq->cmd_type = REQ_TYPE_BLOCK_PC;
 
-	rq->timeout = (hdr->timeout * HZ) / 1000;
+	rq->timeout = msecs_to_jiffies(hdr->timeout);
 	if (!rq->timeout)
 		rq->timeout = q->sg_timeout;
 	if (!rq->timeout)
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index 829d87d3e00f..1bcbd8c79896 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -9,6 +9,7 @@
 #include <linux/module.h>
 #include <linux/blkdev.h>
 #include <linux/elevator.h>
+#include <linux/jiffies.h>
 #include <linux/rbtree.h>
 #include <linux/ioprio.h>
 #include <linux/blktrace_api.h>
-- 
2.30.2