linux-kernel - [PATCH 2/3] balancenuma: free new thp if fail to isolate the old

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Message-ID: <CAJd=RBAn-wASi7vHw2+hoU5zGE8x0pn-T_sPbtTF_HS5ha10NQ@mail.gmail.com>
Date:	Sat, 24 Nov 2012 12:18:51 +0800
From:	Hillf Danton <dhillf@...il.com>
To:	Mel Gorman <mgorman@...e.de>
Cc:	Hillf Danton <dhillf@...il.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 2/3] balancenuma: free new thp if fail to isolate the old

Free newly allocated thp if fail to isolate the old.

Signed-off-by: Hillf Danton <dhillf@...il.com>
---

--- a/mm/migrate.c	Fri Nov 23 21:29:40 2012
+++ b/mm/migrate.c	Fri Nov 23 22:52:06 2012
@@ -1624,8 +1624,10 @@ int migrate_misplaced_transhuge_page(str
 		goto out_dropref;

 	isolated = numamigrate_isolate_page(pgdat, page);
-	if (!isolated)
+	if (!isolated) {
+		put_page(new_page);
 		goto out_keep_locked;
+	}
 	list_add(&page->lru, &migratepages);

 	/* Prepare a page as a migration target */
--
--
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