lkml.org 
[lkml]   [2006]   [Sep]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Subject[PATCH 12/20] nbd: limit blk_queue
Date
From
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")) {
--

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-09-12 19:19    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site