aboutsummaryrefslogtreecommitdiff
path: root/include/linux/blkdev.h
diff options
context:
space:
mode:
authorTejun Heo <tj@kernel.org>2012-04-13 13:11:32 -0700
committerJens Axboe <axboe@kernel.dk>2012-04-20 10:06:06 +0200
commit03d8e11142a893ad322285d3c8a08e88b570cda1 (patch)
tree0f6117ffdb0ad9565a165a98a8d4985ced094eb1 /include/linux/blkdev.h
parentb82d4b197c782ced82a8b7b76664125d2d3c156c (diff)
downloadvexpress-lsk-03d8e11142a893ad322285d3c8a08e88b570cda1.tar.gz
blkcg: add request_queue->root_blkg
With per-queue policy activation, root blkg creation will be moved to blkcg core. Add q->root_blkg in preparation. For blk-throtl, this replaces throtl_data->root_tg; however, cfq needs to keep cfqd->root_group for !CONFIG_CFQ_GROUP_IOSCHED. This is to prepare for per-queue policy activation and doesn't cause any functional difference. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/blkdev.h')
-rw-r--r--include/linux/blkdev.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index d2c69f8c188..b01c377fd73 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -31,6 +31,7 @@ struct blk_trace;
struct request;
struct sg_io_hdr;
struct bsg_job;
+struct blkio_group;
#define BLKDEV_MIN_RQ 4
#define BLKDEV_MAX_RQ 128 /* Default maximum */
@@ -369,6 +370,7 @@ struct request_queue {
struct list_head icq_list;
#ifdef CONFIG_BLK_CGROUP
+ struct blkio_group *root_blkg;
struct list_head blkg_list;
#endif