[Xen-devel] [PATCH 5/5] bio-cgroup: Add a cgroup support to dm-ioband

[Ryo Tsuruta <ryov@xxxxxxxxxxxxx>]

With this patch, dm-ioband can work with the bio cgroup.

Based on 2.6.30-rc1
Signed-off-by: Hirokazu Takahashi <taka@xxxxxxxxxxxxx>
Signed-off-by: Ryo Tsuruta <ryov@xxxxxxxxxxxxx>

---
 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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