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authorJoonsoo Kim <iamjoonsoo.kim@lge.com>2020-06-25 20:30:37 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-06-26 00:27:38 -0700
commit0076f029cb2906d32baf3bf4401ef09663071d16 (patch)
treef802cfcf449f056fa1a86dc3491c2bd0caf67f72 /mm
parentcb6868832ede5cd73b346ec11cf89814d26ff7c7 (diff)
downloadlinux-0076f029cb2906d32baf3bf4401ef09663071d16.tar.bz2
mm/memory: fix IO cost for anonymous page
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: 314b57fb0460001 ("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>
Diffstat (limited to 'mm')
-rw-r--r--mm/memory.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/mm/memory.c b/mm/memory.c
index 0e5b25c9b151..87ec87cdc1ff 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -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);
}