From: Jia He <hejianet@gmail.com>
To: linux-mm@kvack.org, linux-kernel@vger.kernel.org
Cc: Andrew Morton <akpm@linux-foundation.org>,
Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>,
Michal Hocko <mhocko@suse.com>,
Mike Kravetz <mike.kravetz@oracle.com>,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
Gerald Schaefer <gerald.schaefer@de.ibm.com>,
zhong jiang <zhongjiang@huawei.com>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Vaishali Thakkar <vaishali.thakkar@oracle.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Mel Gorman <mgorman@techsingularity.net>,
Vlastimil Babka <vbabka@suse.cz>,
Minchan Kim <minchan@kernel.org>, Rik van Riel <riel@redhat.com>,
Jia He <hejianet@gmail.com>
Subject: [PATCH RFC 3/3] mm, vmscan: correct prepare_kswapd_sleep return value
Date: Tue, 24 Jan 2017 15:49:04 +0800 [thread overview]
Message-ID: <1485244144-13487-4-git-send-email-hejianet@gmail.com> (raw)
In-Reply-To: <1485244144-13487-1-git-send-email-hejianet@gmail.com>
When there is no reclaimable pages in the zone, even the zone is
not balanced, we let kswapd go sleeping. That is prepare_kswapd_sleep
will return true in this case.
Signed-off-by: Jia He <hejianet@gmail.com>
---
mm/vmscan.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 7396a0a..54445e2 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -3140,7 +3140,8 @@ static bool prepare_kswapd_sleep(pg_data_t *pgdat, int order, int classzone_idx)
if (!managed_zone(zone))
continue;
- if (!zone_balanced(zone, order, classzone_idx))
+ if (!zone_balanced(zone, order, classzone_idx)
+ && !zone_reclaimable_pages(zone))
return false;
}
--
2.5.5
--
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next prev parent reply other threads:[~2017-01-24 7:49 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-24 7:49 [PATCH RFC 0/3] optimize kswapd when it does reclaim for hugepage Jia He
2017-01-24 7:49 ` [PATCH RFC 1/3] mm/hugetlb: split alloc_fresh_huge_page_node into fast and slow path Jia He
2017-01-24 16:52 ` Michal Hocko
2017-01-24 7:49 ` [PATCH RFC 2/3] mm, vmscan: limit kswapd loop if no progress is made Jia He
2017-01-24 16:54 ` Michal Hocko
2017-01-25 3:03 ` hejianet
2017-01-25 9:34 ` Michal Hocko
2017-01-24 7:49 ` Jia He [this message]
2017-01-24 22:01 ` [PATCH RFC 3/3] mm, vmscan: correct prepare_kswapd_sleep return value Rik van Riel
2017-01-25 2:24 ` hejianet
2017-01-24 16:46 ` [PATCH RFC 0/3] optimize kswapd when it does reclaim for hugepage Michal Hocko
2017-01-25 2:13 ` hejianet
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