From: Mel Gorman <mgorman@techsingularity.net>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>,
Minchan Kim <minchan@kernel.org>,
Vlastimil Babka <vbabka@suse.cz>, Linux-MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>,
Mel Gorman <mgorman@techsingularity.net>
Subject: [PATCH 2/5] mm, vmscan: avoid passing in classzone_idx unnecessarily to compaction_ready -fix
Date: Fri, 15 Jul 2016 14:09:22 +0100 [thread overview]
Message-ID: <1468588165-12461-3-git-send-email-mgorman@techsingularity.net> (raw)
In-Reply-To: <1468588165-12461-1-git-send-email-mgorman@techsingularity.net>
As pointed out by Vlastimil, there is a redundant check in shrink_zones
since commit "mm, vmscan: avoid passing in classzone_idx unnecessarily to
compaction_ready". The zonelist iterator only returns zones that already
meet the requirements of the allocation request.
This is a fix to the mmotm patch
mm-vmscan-avoid-passing-in-classzone_idx-unnecessarily-to-compaction_ready.patch
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
---
mm/vmscan.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 4fdb9e419588..c2ad4263f965 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2606,7 +2606,6 @@ static void shrink_zones(struct zonelist *zonelist, struct scan_control *sc)
*/
if (IS_ENABLED(CONFIG_COMPACTION) &&
sc->order > PAGE_ALLOC_COSTLY_ORDER &&
- zonelist_zone_idx(z) <= sc->reclaim_idx &&
compaction_ready(zone, sc)) {
sc->compaction_ready = true;
continue;
--
2.6.4
--
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next prev parent reply other threads:[~2016-07-15 13:09 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-15 13:09 [PATCH 0/5] Follow-up fixes to node-lru series v2 Mel Gorman
2016-07-15 13:09 ` [PATCH 1/5] mm, vmscan: make shrink_node decisions more node-centric -fix Mel Gorman
2016-07-15 15:42 ` Minchan Kim
2016-07-18 16:14 ` Johannes Weiner
2016-07-15 13:09 ` Mel Gorman [this message]
2016-07-15 15:50 ` [PATCH 2/5] mm, vmscan: avoid passing in classzone_idx unnecessarily to compaction_ready -fix Minchan Kim
2016-07-18 16:15 ` Johannes Weiner
2016-07-15 13:09 ` [PATCH 3/5] mm, pagevec: Release/reacquire lru_lock on pgdat change Mel Gorman
2016-07-15 15:53 ` Minchan Kim
2016-07-18 16:20 ` Johannes Weiner
2016-07-15 13:09 ` [PATCH 4/5] mm: show node_pages_scanned per node, not zone Mel Gorman
2016-07-16 10:14 ` Minchan Kim
2016-07-15 13:09 ` [PATCH 5/5] mm, vmscan: Update all zone LRU sizes before updating memcg Mel Gorman
2016-07-15 14:45 ` Minchan Kim
2016-07-15 15:01 ` Mel Gorman
2016-07-15 15:54 ` Minchan Kim
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