From b8ac7066011eb9fb1bea5bdcda1aedf3f90483da Mon Sep 17 00:00:00 2001
From: Jens Axboe <axboe@suse.de>
Date: Thu, 10 Jul 2003 10:06:52 -0700
Subject: [PATCH] disk stats accounting fix

We should only account file system requests, ones originating from
__make_request(). Otherwise it skews the counters and they go negative
really fast.
---
 drivers/block/ll_rw_blk.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/block/ll_rw_blk.c b/drivers/block/ll_rw_blk.c
index f03a77be82b6..29e94321f8ff 100644
--- a/drivers/block/ll_rw_blk.c
+++ b/drivers/block/ll_rw_blk.c
@@ -2354,7 +2354,7 @@ void end_that_request_last(struct request *req)
 	struct gendisk *disk = req->rq_disk;
 	struct completion *waiting = req->waiting;
 
-	if (disk) {
+	if (disk && blk_fs_request(req)) {
 		unsigned long duration = jiffies - req->start_time;
 		switch (rq_data_dir(req)) {
 		    case WRITE:
-- 
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