On 05.12.2017 00:35, Jeff Moyer wrote: > Kirill Tkhai <ktkhai@xxxxxxxxxxxxx> writes: > >> Hi, Benjamin, >> >> On 04.12.2017 19:52, Benjamin LaHaise wrote: >>> Hi Kirill, >>> >>> On Mon, Dec 04, 2017 at 07:12:51PM +0300, Kirill Tkhai wrote: >>>> 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. >>> >>> Where are your test cases to check this functionality in the libaio test >>> suite? >> >> I tried to find actual libaio test suite repository url in google, >> but there is no certain answer. Also, there is no information in kernel >> anywhere (I hope I grepped right). >> >> Could you please provide url where actual upstream libaio could be obtained? > > https://pagure.io/libaio > > Patches can be sent to this list (linux-aio). > Thank you, Jeff. Kirill >>>> 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@xxxxxxxxxxxxx> >>>> >>> >> >> -- >> To unsubscribe, send a message with 'unsubscribe linux-aio' in >> the body to majordomo@xxxxxxxxx. For more info on Linux AIO, >> see: http://www.kvack.org/aio/ >> Don't email: <a href=mailto:"aart@xxxxxxxxx";>aart@xxxxxxxxx</a>
