mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-27 12:57:53 +00:00
Code Issues Releases Wiki Activity

mm/memory: fix IO cost for anonymous page

Browse source 
With synchronous IO swap device, swap-in is directly handled in fault
code.  Since IO cost notation isn't added there, with synchronous IO
swap device, LRU balancing could be wrongly biased.  Fix it to count it
in fault code.

Link: http://lkml.kernel.org/r/1592288204-27734-4-git-send-email-iamjoonsoo.kim@lge.com
Fixes: 314b57fb04 ("mm: balance LRU lists based on relative thrashing cache sizing")
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Joonsoo Kim <js1304@gmail.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: Rik van Riel <riel@surriel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Joonsoo Kim 2020-06-25 20:30:37 -07:00 committed by Linus Torvalds
parent cb6868832e
commit 0076f029cb
1 changed files with 8 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
mm/memory.c
View file

@ -3146,6 +3146,14 @@ vm_fault_t do_swap_page(struct vm_fault *vmf)
goto out_page;
}
/*
* XXX: Move to lru_cache_add() when it
* supports new vs putback
*/
spin_lock_irq(&page_pgdat(page)->lru_lock);
lru_note_cost_page(page);
spin_unlock_irq(&page_pgdat(page)->lru_lock);
lru_cache_add(page);
swap_readpage(page, true);
}