Messages in this thread | | | Subject | [PATCH 0/5] blkcg: Limit maximum number of aio requests available for cgroup | From | Kirill Tkhai <> | Date | Mon, 04 Dec 2017 19:12:51 +0300 |
| |
Hi,
this patch set introduces accounting aio_nr and aio_max_nr per blkio cgroup. It may be used to limit number of aio requests, which are available for a cgroup, and could be useful for containers.
The accounting is hierarchical, and aio contexts, allocated in child cgroup, are accounted in parent cgroups too.
Also, new cgroup file "io.aio_nr" is introduced. It's used to set cgroup aio requests limit, to show current limit and number of currenly occupied requests.
Patches 1-3 are refactoring. Patch 4 is the place where the accounting actually introduced. Patch 5 adds "io.aio_nr" file.
---
Kirill Tkhai (5): aio: Move aio_nr increment to separate function aio: Export aio_nr_lock and aio_max_nr initial value to include/linux/aio.h blkcg: Add blkcg::blkg_aio_nr and blkcg::blkg_aio_max_nr blkcg: Charge aio requests in blkio cgroup hierarchy blkcg: Add cgroup file to configure blkcg::blkg_aio_max_nr
block/blk-cgroup.c | 88 +++++++++++++++++++++++++- fs/aio.c | 151 ++++++++++++++++++++++++++++++++++++++++---- include/linux/aio.h | 21 ++++++ include/linux/blk-cgroup.h | 4 + 4 files changed, 247 insertions(+), 17 deletions(-)
-- Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
| |