From 9e4be4708e9e88da46ae1f0bb1054c3619cc476e Mon Sep 17 00:00:00 2001
From: Jerome Marchand <jmarchan@redhat.com>
Date: Tue, 12 Nov 2013 15:07:12 -0800
Subject: mm/compaction.c: update comment about zone lock in
isolate_freepages_block
Since commit f40d1e42bb98 ("mm: compaction: acquire the zone->lock as
late as possible"), isolate_freepages_block() takes the zone->lock
itself. The function description however still states that the
zone->lock must be held.
This patch removes this outdated statement.
Signed-off-by: Jerome Marchand <jmarchan@redhat.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
mm/compaction.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
(limited to 'mm/compaction.c')
diff --git a/mm/compaction.c b/mm/compaction.c
index b5326b141a25..805165bcd3dd 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -235,10 +235,9 @@ static bool suitable_migration_target(struct page *page)
}
/*
- * Isolate free pages onto a private freelist. Caller must hold zone->lock.
- * If @strict is true, will abort returning 0 on any invalid PFNs or non-free
- * pages inside of the pageblock (even though it may still end up isolating
- * some pages).
+ * Isolate free pages onto a private freelist. If @strict is true, will abort
+ * returning 0 on any invalid PFNs or non-free pages inside of the pageblock
+ * (even though it may still end up isolating some pages).
*/
static unsigned long isolate_freepages_block(struct compact_control *cc,
unsigned long blockpfn,
--
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