From: Gavin Shan <shangw@linux.vnet.ibm.com>
Date: Tue, 29 May 2012 22:06:44 +0000 (-0700)
Subject: mm/buddy: dump PG_compound_lock page flag
X-Git-Tag: upstream/snapshot3+hdmi~7343^2~122
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=be9cd873e2a706a688e37224d48e135efd8c0d26;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

mm/buddy: dump PG_compound_lock page flag

The array pageflag_names[] does conversion from page flags into their
corresponding names so that a meaningful representation of the
corresponding page flag can be printed.  This mechanism is used while
dumping page frames.  However, the array missed PG_compound_lock.  So
the PG_compound_lock page flag would be printed as a digital number
instead of a meaningful string.

The patch fixes that and prints "compound_lock" for the PG_compound_lock
page flag.

Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 457b4de..72869ea 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -5973,6 +5973,9 @@ static struct trace_print_flags pageflag_names[] = {
 #ifdef CONFIG_MEMORY_FAILURE
 	{1UL << PG_hwpoison,		"hwpoison"	},
 #endif
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+	{1UL << PG_compound_lock,	"compound_lock"	},
+#endif
 	{-1UL,				NULL		},
 };