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| author | Tejun Heo | 2018-07-03 17:14:54 +0200 |
|---|---|---|
| committer | Jens Axboe | 2018-07-09 17:07:54 +0200 |
| commit | 0d3bd88d54f513723602b361dccfc71639f50779 (patch) | |
| tree | 349c7095f6e4faad0eadd64b516e80e1a0d3ef8d /mm/page_io.c | |
| parent | blk: introduce REQ_SWAP (diff) | |
| download | kernel-qcow2-linux-0d3bd88d54f513723602b361dccfc71639f50779.tar.gz kernel-qcow2-linux-0d3bd88d54f513723602b361dccfc71639f50779.tar.xz kernel-qcow2-linux-0d3bd88d54f513723602b361dccfc71639f50779.zip | |
swap,blkcg: issue swap io with the appropriate context
For backcharging we need to know who the page belongs to when swapping
it out. We don't worry about things that do ->rw_page (zram etc) at the
moment, we're only worried about pages that actually go to a block
device.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'mm/page_io.c')
| -rw-r--r-- | mm/page_io.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/page_io.c b/mm/page_io.c index a552cb37e220..aafd19ec1db4 100644 --- a/mm/page_io.c +++ b/mm/page_io.c @@ -339,6 +339,7 @@ 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); + bio_associate_blkcg_from_page(bio, page); count_swpout_vm_event(page); set_page_writeback(page); unlock_page(page); |