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Date:	Fri, 15 Feb 2008 01:59:55 -0500
From:	Vasily Tarasov <vtaras@...nvz.org>
To:	axboe@...nel.dk, linux-kernel@...r.kernel.org, devel@...nvz.org,
	containers@...ux-foundation.com, dev@...nvz.org, xemul@...nvz.org
Subject: [RFC][PATCH 8/9] cgroups: block: cfq: I/O bandwidth controlling subsystem for CGroups based on CFQ

From: Vasily Tarasov <vtaras@...nvz.org>

Configurable cgroup time slice support.

Signed-off-by: Vasily Tarasov <vtaras@...nvz.org>

---

--- linux-2.6.25-rc5-mm1/block/cfq-iosched.c.slice	2008-02-15 01:11:45.000000000 -0500
+++ linux-2.6.25-rc5-mm1/block/cfq-iosched.c	2008-02-15 01:12:22.000000000 -0500
@@ -2150,6 +2150,7 @@ SHOW_FUNCTION(cfq_slice_idle_show, cfqd-
 SHOW_FUNCTION(cfq_slice_sync_show, cfqd->cfq_slice[1], 1);
 SHOW_FUNCTION(cfq_slice_async_show, cfqd->cfq_slice[0], 1);
 SHOW_FUNCTION(cfq_slice_async_rq_show, cfqd->cfq_slice_async_rq, 0);
+SHOW_FUNCTION(cfq_cgrp_slice_show, cfqd->cfqio_cgrp_slice, 1);
 #undef SHOW_FUNCTION
 
 #define STORE_FUNCTION(__FUNC, __PTR, MIN, MAX, __CONV)			\
@@ -2181,6 +2182,7 @@ STORE_FUNCTION(cfq_slice_sync_store, &cf
 STORE_FUNCTION(cfq_slice_async_store, &cfqd->cfq_slice[0], 1, UINT_MAX, 1);
 STORE_FUNCTION(cfq_slice_async_rq_store, &cfqd->cfq_slice_async_rq, 1,
 		UINT_MAX, 0);
+STORE_FUNCTION(cfq_cgrp_slice_store, &cfqd->cfqio_cgrp_slice, 1, UINT_MAX, 1);
 #undef STORE_FUNCTION
 
 #define CFQ_ATTR(name) \
@@ -2196,6 +2198,7 @@ static struct elv_fs_entry cfq_attrs[] =
 	CFQ_ATTR(slice_async),
 	CFQ_ATTR(slice_async_rq),
 	CFQ_ATTR(slice_idle),
+	CFQ_ATTR(cgrp_slice),
 	__ATTR_NULL
 };
 
--
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