[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 4/5] 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 2008-09-19 10:55:46.000000000 +0900 +++ linux-2.6.27-rc1-mm1.cg3/drivers/md/dm-ioband-type.c 2008-09-19 18:51:00.000000000 +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
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