From mboxrd@z Thu Jan 1 00:00:00 1970 Message-Id: <20060912144904.299910000@chello.nl> References: <20060912143049.278065000@chello.nl> Subject: [PATCH 12/20] nbd: limit blk_queue Content-Disposition: inline; filename=nbd_queue.patch Date: Tue, 12 Sep 2006 17:25:49 +0200 From: Peter Zijlstra Sender: owner-linux-mm@kvack.org Return-Path: To: linux-mm@kvack.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org Cc: Linus Torvalds , Andrew Morton , David Miller , Rik van Riel , Daniel Phillips , Peter Zijlstra , Pavel Machek List-ID: Limit each request to 1 page, so that the request throttling also limits the number of in-flight pages. Signed-off-by: Peter Zijlstra Signed-off-by: Daniel Phillips CC: Pavel Machek --- drivers/block/nbd.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) Index: linux-2.6/drivers/block/nbd.c =================================================================== --- linux-2.6.orig/drivers/block/nbd.c 2006-09-07 18:43:41.000000000 +0200 +++ linux-2.6/drivers/block/nbd.c 2006-09-07 18:44:12.000000000 +0200 @@ -638,6 +638,9 @@ static int __init nbd_init(void) put_disk(disk); goto out; } + blk_queue_max_segment_size(disk->queue, PAGE_SIZE); + blk_queue_max_hw_segments(disk->queue, 1); + blk_queue_max_phys_segments(disk->queue, 1); } if (register_blkdev(NBD_MAJOR, "nbd")) { -- -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org