linux-kernel - [PATCH 2/3] dm: Use blk_queue_copy

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Date:	Sat, 19 Sep 2009 01:26:32 +0900
From:	"Jun'ichi Nomura" <j-nomura@...jp.nec.com>
To:	Jens Axboe <jens.axboe@...cle.com>,
	Mike Snitzer <snitzer@...hat.com>,
	"Martin K. Petersen" <martin.petersen@...cle.com>,
	Alasdair G Kergon <agk@...hat.com>
CC:	David Strand <dpstrand@...il.com>,
	device-mapper development <dm-devel@...hat.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 2/3] dm: Use blk_queue_copy_limits()

Use new blk_queue_copy_limits() so that invalid limits
(max_sectors == 0) are fixed up appropriately when copied to the queue.

Signed-off-by: Kiyoshi Ueda <k-ueda@...jp.nec.com>
Signed-off-by: Jun'ichi Nomura <j-nomura@...jp.nec.com>
Reported-by: David Strand <dpstrand@...il.com>
Cc: Mike Snitzer <snitzer@...hat.com>
Cc: Alasdair G Kergon <agk@...hat.com>
Cc: Martin K. Petersen <martin.petersen@...cle.com>
Cc: Jens Axboe <jens.axboe@...cle.com>
---
 drivers/md/dm-table.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6.31.work/drivers/md/dm-table.c
===================================================================
--- linux-2.6.31.work.orig/drivers/md/dm-table.c
+++ linux-2.6.31.work/drivers/md/dm-table.c
@@ -1090,7 +1090,7 @@ void dm_table_set_restrictions(struct dm
 	/*
 	 * Copy table's limits to the DM device's request_queue
 	 */
-	q->limits = *limits;
+	blk_queue_copy_limits(q, limits);

 	if (limits->no_cluster)
 		queue_flag_clear_unlocked(QUEUE_FLAG_CLUSTER, q);
--
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