From: Johannes Weiner <hannes@cmpxchg.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Vladimir Davydov <vdavydov@virtuozzo.com>,
linux-mm@kvack.org, cgroups@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] mm: vmpressure: fix scan window after SWAP_CLUSTER_MAX increase
Date: Mon, 19 Oct 2015 14:13:01 -0400 [thread overview]
Message-ID: <1445278381-21033-1-git-send-email-hannes@cmpxchg.org> (raw)
mm-increase-swap_cluster_max-to-batch-tlb-flushes.patch changed
SWAP_CLUSTER_MAX from 32 pages to 256 pages, inadvertantly switching
the scan window for vmpressure detection from 2MB to 16MB. Revert.
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
---
mm/vmpressure.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/vmpressure.c b/mm/vmpressure.c
index c5afd57..74f206b 100644
--- a/mm/vmpressure.c
+++ b/mm/vmpressure.c
@@ -38,7 +38,7 @@
* TODO: Make the window size depend on machine size, as we do for vmstat
* thresholds. Currently we set it to 512 pages (2MB for 4KB pages).
*/
-static const unsigned long vmpressure_win = SWAP_CLUSTER_MAX * 16;
+static const unsigned long vmpressure_win = SWAP_CLUSTER_MAX;
/*
* These thresholds are used when we account memory pressure through
--
2.6.1
--
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next reply other threads:[~2015-10-19 18:13 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-19 18:13 Johannes Weiner [this message]
2015-10-20 7:47 ` Mel Gorman
2015-10-20 13:50 ` Johannes Weiner
2015-10-21 9:17 ` Mel Gorman
2015-10-21 19:38 ` Johannes Weiner
2015-10-21 20:05 ` Hugh Dickins
2015-11-16 20:22 ` Johannes Weiner
2015-12-02 10:11 ` Hugh Dickins
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