linux-kernel - [PATCH] mm: page_alloc: fix variable type in zonelist type iteration

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Date:	Tue,  8 Dec 2015 09:03:32 -0500
From:	Johannes Weiner <hannes@...xchg.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	kernel-team@...com
Subject: [PATCH] mm: page_alloc: fix variable type in zonelist type iteration

/home/hannes/src/linux/linux/mm/page_alloc.c: In function ‘build_zonelists’:
/home/hannes/src/linux/linux/mm/page_alloc.c:4171:16: warning: comparison between ‘enum zone_type’ and ‘enum <anonymous>’ [-Wenum-compare]
  for (i = 0; i < MAX_ZONELISTS; i++) {
                ^

MAX_ZONELISTS has never been of enum zone_type, probably gcc only
recently started including -Wenum-compare in -Wall.

Make i a simple int.

Signed-off-by: Johannes Weiner <hannes@...xchg.org>
---
 mm/page_alloc.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index d06a7d0..d5f291b 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -4160,8 +4160,7 @@ static void set_zonelist_order(void)
 
 static void build_zonelists(pg_data_t *pgdat)
 {
-	int j, node, load;
-	enum zone_type i;
+	int i, j, node, load;
 	nodemask_t used_mask;
 	int local_node, prev_node;
 	struct zonelist *zonelist;
-- 
2.6.3

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