Messages in this thread Patch in this message | | | Subject | [PATCH 12/20] nbd: limit blk_queue | Date | Tue, 12 Sep 2006 17:25:49 +0200 | From | Peter Zijlstra <> |
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Limit each request to 1 page, so that the request throttling also limits the number of in-flight pages.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Daniel Phillips <phillips@google.com> CC: Pavel Machek <pavel@ucw.cz> --- 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")) { --
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