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| author | Jens Axboe <axboe@kernel.dk> | 2020-07-20 15:38:23 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-07-20 15:38:23 -0600 |
| commit | 9caaa66c918c020fd16e84d1c6ebcce9960df1b2 (patch) | |
| tree | 578d455a53453a1aead77da399c5134e73224a66 /mm/page_io.c | |
| parent | ba47d845d715a010f7b51f6f89bae32845e6acb7 (diff) | |
| parent | ef45fe470e1e5410db4af87abc5d5055427945ac (diff) | |
Merge branch 'for-5.9/block' into for-5.9/block-merge
* for-5.9/block: (124 commits)
blk-cgroup: show global disk stats in root cgroup io.stat
blk-cgroup: make iostat functions visible to stat printing
block: improve discard bio alignment in __blkdev_issue_discard()
block: change REQ_OP_ZONE_RESET and REQ_OP_ZONE_RESET_ALL to be odd numbers
block: defer flush request no matter whether we have elevator
block: make blk_timeout_init() static
block: remove retry loop in ioc_release_fn()
block: remove unnecessary ioc nested locking
block: integrate bd_start_claiming into __blkdev_get
block: use bd_prepare_to_claim directly in the loop driver
block: refactor bd_start_claiming
block: simplify the restart case in __blkdev_get
Revert "blk-rq-qos: remove redundant finish_wait to rq_qos_wait."
block: always remove partitions from blk_drop_partitions()
block: relax jiffies rounding for timeouts
blk-mq: remove redundant validation in __blk_mq_end_request()
blk-mq: Remove unnecessary local variable
writeback: remove bdi->congested_fn
writeback: remove struct bdi_writeback_congested
writeback: remove {set,clear}_wb_congested
...
Diffstat (limited to 'mm/page_io.c')
| -rw-r--r-- | mm/page_io.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/mm/page_io.c b/mm/page_io.c index e8726f3e3820..ccda76790088 100644 --- a/mm/page_io.c +++ b/mm/page_io.c @@ -277,6 +277,23 @@ static inline void count_swpout_vm_event(struct page *page) count_vm_events(PSWPOUT, hpage_nr_pages(page)); } +#if defined(CONFIG_MEMCG) && defined(CONFIG_BLK_CGROUP) +static void bio_associate_blkg_from_page(struct bio *bio, struct page *page) +{ + struct cgroup_subsys_state *css; + + if (!page->mem_cgroup) + return; + + rcu_read_lock(); + css = cgroup_e_css(page->mem_cgroup->css.cgroup, &io_cgrp_subsys); + bio_associate_blkg_from_css(bio, css); + rcu_read_unlock(); +} +#else +#define bio_associate_blkg_from_page(bio, page) do { } while (0) +#endif /* CONFIG_MEMCG && CONFIG_BLK_CGROUP */ + int __swap_writepage(struct page *page, struct writeback_control *wbc, bio_end_io_t end_write_func) { |