WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

[Xen-devel] [PATCH 7/7] bio-cgroup: Add a cgroup support to dm-ioband

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

Based on 2.6.27-rc1-mm1
Signed-off-by: Ryo Tsuruta <ryov@xxxxxxxxxxxxx>
Signed-off-by: Hirokazu Takahashi <taka@xxxxxxxxxxxxx>

diff -Ndupr linux-2.6.27-rc1-mm1.cg2/drivers/md/dm-ioband-type.c 
linux-2.6.27-rc1-mm1.cg3/drivers/md/dm-ioband-type.c
--- linux-2.6.27-rc1-mm1.cg2/drivers/md/dm-ioband-type.c        2008-08-01 
16:53:57.000000000 +0900
+++ linux-2.6.27-rc1-mm1.cg3/drivers/md/dm-ioband-type.c        2008-08-01 
19:44:36.000000000 +0900
@@ -6,6 +6,7 @@
  * This file is released under the GPL.
  */
 #include <linux/bio.h>
+#include <linux/biocontrol.h>
 #include "dm.h"
 #include "dm-bio-list.h"
 #include "dm-ioband.h"
@@ -53,13 +54,13 @@ 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 */
+       struct io_context *ioc = get_bio_cgroup_iocontext(bio);
+       int id = 0;
+       if (ioc) {
+               id = ioc->id;
+               put_io_context(ioc);
+       }
+       return id;
 }
 
 struct group_type dm_ioband_group_type[] = {

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel

<Prev in Thread] Current Thread [Next in Thread>