From d548b34b062b60b4f4df295a0b4823dfda1f1fc4 Mon Sep 17 00:00:00 2001
From: Mike Snitzer <snitzer@redhat.com>
Date: Thu, 5 Mar 2015 22:21:10 -0500
Subject: [PATCH] dm: reduce the queue delay used in dm_request_fn from 100ms
to 10ms
Commit 7eaceaccab ("block: remove per-queue plugging") didn't justify
DM's use of a 100ms delay; such an extended delay is a liability when
there is reason to re-kick the queue.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
---
drivers/md/dm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 6f854287384b..98eb02d32e6e 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -1997,7 +1997,7 @@ static void dm_request_fn(struct request_queue *q)
goto out;
delay_and_out:
- blk_delay_queue(q, HZ / 10);
+ blk_delay_queue(q, HZ / 100);
out:
dm_put_live_table(md, srcu_idx);
}
--
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