[PATCH] mm, vmscan: Give up balancing node for high order allocations earlier
STALE3734d
From: Hillf Danton <hidden>
Date: 2016-06-29 05:49:09
Also in:
lkml
Subsystem:
memory management, memory management - mglru (multi-gen lru), memory management - reclaim, the rest · Maintainers:
Andrew Morton, Johannes Weiner, Linus Torvalds
To avoid excessive reclaim, we give up rebalancing for high order allocations right after reclaiming enough pages. Signed-off-by: Hillf Danton <redacted> --- mm/vmscan.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index ee7e531..d080fb2 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c@@ -3159,8 +3159,7 @@ static int balance_pgdat(pg_data_t *pgdat, int order, int classzone_idx) do { bool raise_priority = true; - - sc.nr_reclaimed = 0; + unsigned long reclaimed_pages = sc.nr_reclaimed; /* * If the number of buffer_heads in the machine exceeds the
@@ -3254,7 +3253,7 @@ static int balance_pgdat(pg_data_t *pgdat, int order, int classzone_idx) * Raise priority if scanning rate is too low or there was no * progress in reclaiming pages */ - if (raise_priority || !sc.nr_reclaimed) + if (raise_priority || sc.nr_reclaimed == reclaimed_pages) sc.priority--; } while (sc.priority >= 1); -- --
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