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Subject[PATCH 5/5] bio-cgroup: Add a cgroup support to dm-ioband
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With this patch, dm-ioband can work with the bio cgroup.

Based on 2.6.30-rc1
Signed-off-by: Hirokazu Takahashi <taka@valinux.co.jp>
Signed-off-by: Ryo Tsuruta <ryov@valinux.co.jp>

---
drivers/md/dm-ioband-type.c | 10 ++--------
1 file changed, 2 insertions(+), 8 deletions(-)
Index: linux-2.6.30-rc1/drivers/md/dm-ioband-type.c
===================================================================
--- linux-2.6.30-rc1.orig/drivers/md/dm-ioband-type.c
+++ linux-2.6.30-rc1/drivers/md/dm-ioband-type.c
@@ -6,6 +6,7 @@
* This file is released under the GPL.
*/
#include <linux/bio.h>
+#include <linux/biotrack.h>
#include "dm.h"
#include "dm-bio-list.h"
#include "dm-ioband.h"
@@ -53,14 +54,7 @@ static int ioband_node(struct bio *bio)

static int ioband_cgroup(struct bio *bio)
{
- /*
- * This function should return the ID of the cgroup which
- * issued "bio". The ID of the cgroup which the current
- * process belongs to won't be suitable ID for this purpose,
- * since some BIOs will be handled by kernel threads like aio
- * or pdflush on behalf of the process requesting the BIOs.
- */
- return 0; /* not implemented yet */
+ return get_bio_cgroup_id(bio);
}

struct group_type dm_ioband_group_type[] = {

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