Patch "dm: fix second blk_delay_queue() parameter to be in msec units not jiffies" has been added to the 4.7-stable tree

Patch "dm: fix second blk_delay_queue() parameter to be in msec units not jiffies" has been added to the 4.7-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    dm: fix second blk_delay_queue() parameter to be in msec units not jiffies

to the 4.7-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     dm-fix-second-blk_delay_queue-parameter-to-be-in-msec-units-not-jiffies.patch
and it can be found in the queue-4.7 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From bd9f55ea1cf6e14eb054b06ea877d2d1fa339514 Mon Sep 17 00:00:00 2001
From: Tahsin Erdogan <tahsin@google.com>
Date: Fri, 15 Jul 2016 06:27:08 -0700
Subject: dm: fix second blk_delay_queue() parameter to be in msec units not jiffies

From: Tahsin Erdogan <tahsin@google.com>

commit bd9f55ea1cf6e14eb054b06ea877d2d1fa339514 upstream.

Commit d548b34b062 ("dm: reduce the queue delay used in dm_request_fn
from 100ms to 10ms") always intended the value to be 10 msecs -- it
just expressed it in jiffies because earlier commit 7eaceaccab ("block:
remove per-queue plugging") did.

Signed-off-by: Tahsin Erdogan <tahsin@google.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Fixes: d548b34b062 ("dm: reduce the queue delay used in dm_request_fn from 100ms to 10ms")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/md/dm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -2175,7 +2175,7 @@ static void dm_request_fn(struct request
 		     md_in_flight(md) && rq->bio && rq->bio->bi_vcnt == 1 &&
 		     md->last_rq_pos == pos && md->last_rq_rw == rq_data_dir(rq)) ||
 		    (ti->type->busy && ti->type->busy(ti))) {
-			blk_delay_queue(q, HZ / 100);
+			blk_delay_queue(q, 10);
 			return;
 		}
 


Patches currently in stable-queue which might be from tahsin@google.com are

queue-4.7/dm-fix-second-blk_delay_queue-parameter-to-be-in-msec-units-not-jiffies.patch