From: Josef Bacik <josef@toxicpanda.com>
To: axboe@kernel.dk, kernel-team@fb.com, linux-block@vger.kernel.org,
akpm@linux-foundation.org, linux-mm@kvack.org,
hannes@cmpxchg.org, linux-kernel@vger.kernel.org, tj@kernel.org,
linux-fsdevel@vger.kernel.org
Subject: [PATCH 05/13] swap,blkcg: issue swap io with the appropriate context
Date: Tue, 29 May 2018 17:17:16 -0400 [thread overview]
Message-ID: <20180529211724.4531-6-josef@toxicpanda.com> (raw)
In-Reply-To: <20180529211724.4531-1-josef@toxicpanda.com>
From: Tejun Heo <tj@kernel.org>
For backcharging we need to know who the page belongs to when swapping
it out.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Josef Bacik <jbacik@fb.com>
---
mm/page_io.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/mm/page_io.c b/mm/page_io.c
index a552cb37e220..61e1268e5dbc 100644
--- a/mm/page_io.c
+++ b/mm/page_io.c
@@ -339,6 +339,16 @@ int __swap_writepage(struct page *page, struct writeback_control *wbc,
goto out;
}
bio->bi_opf = REQ_OP_WRITE | REQ_SWAP | wbc_to_write_flags(wbc);
+#if defined(CONFIG_MEMCG) && defined(CONFIG_BLK_CGROUP)
+ if (page->mem_cgroup) {
+ struct cgroup_subsys_state *blkcg_css;
+
+ blkcg_css = cgroup_get_e_css(page->mem_cgroup->css.cgroup,
+ &io_cgrp_subsys);
+ bio_associate_blkcg(bio, blkcg_css);
+ css_put(blkcg_css);
+ }
+#endif
count_swpout_vm_event(page);
set_page_writeback(page);
unlock_page(page);
--
2.14.3
next prev parent reply other threads:[~2018-05-29 21:17 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-29 21:17 [PATCH 00/13] Introdue io.latency io controller for cgroups Josef Bacik
2018-05-29 21:17 ` [PATCH 01/13] block: add bi_blkg to the bio " Josef Bacik
2018-05-30 15:49 ` Tejun Heo
2018-05-29 21:17 ` [PATCH 02/13] block: introduce bio_issue_as_root_blkg Josef Bacik
2018-05-30 15:53 ` Tejun Heo
2018-05-29 21:17 ` [PATCH 03/13] blk-cgroup: allow controllers to output their own stats Josef Bacik
2018-05-30 15:54 ` Tejun Heo
2018-05-29 21:17 ` [PATCH 04/13] blk: introduce REQ_SWAP Josef Bacik
2018-05-30 15:58 ` Tejun Heo
2018-05-29 21:17 ` Josef Bacik [this message]
2018-05-30 13:06 ` [PATCH 05/13] swap,blkcg: issue swap io with the appropriate context Johannes Weiner
2018-05-30 16:05 ` Tejun Heo
2018-05-29 21:17 ` [PATCH 06/13] blkcg: add generic throttling mechanism Josef Bacik
2018-05-30 13:11 ` Johannes Weiner
2018-05-30 16:26 ` Tejun Heo
2018-05-29 21:17 ` [PATCH 07/13] memcontrol: schedule throttling if we are congested Josef Bacik
2018-05-30 14:15 ` Johannes Weiner
2018-05-29 21:17 ` [PATCH 08/13] blk-stat: export helpers for modifying blk_rq_stat Josef Bacik
2018-05-30 16:31 ` Tejun Heo
2018-05-29 21:17 ` [PATCH 09/13] blk-rq-qos: refactor out common elements of blk-wbt Josef Bacik
2018-05-29 21:17 ` [PATCH 10/13] block: remove external dependency on wbt_flags Josef Bacik
2018-05-29 21:17 ` [PATCH 11/13] rq-qos: introduce dio_bio callback Josef Bacik
2018-05-29 21:17 ` [PATCH 12/13] block: introduce blk-iolatency io controller Josef Bacik
2018-05-29 22:07 ` Randy Dunlap
2018-05-30 16:40 ` Tejun Heo
2018-05-29 21:17 ` [PATCH 13/13] Documentation: add a doc for blk-iolatency Josef Bacik
2018-05-30 16:44 ` Tejun Heo
2018-05-30 18:32 ` Randy Dunlap
2018-06-05 13:29 [PATCH 00/13][V2] Introduce io.latency io controller for cgroups Josef Bacik
2018-06-05 13:29 ` [PATCH 05/13] swap,blkcg: issue swap io with the appropriate context Josef Bacik
2018-06-05 19:41 ` Tejun Heo
2018-06-11 14:06 ` Johannes Weiner
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