linux-kernel - [PATCH] mm/slub.c: keep red_left_pad being zero without SLAB_RED

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Message-Id: <20190104100941.29872-1-rocking@whu.edu.cn>
Date:   Fri,  4 Jan 2019 18:09:41 +0800
From:   Peng Wang <rocking@....edu.cn>
To:     cl@...ux.com, penberg@...nel.org, rientjes@...gle.com,
        iamjoonsoo.kim@....com, akpm@...ux-foundation.org
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        Peng Wang <rocking@....edu.cn>
Subject: [PATCH] mm/slub.c: keep red_left_pad being zero without SLAB_RED_ZONE flag

It seems more clear for red_left_pad to be zero despite not being used
without SLAB_RED_ZONE flag.

Signed-off-by: Peng Wang <rocking@....edu.cn>
---
 mm/slub.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/slub.c b/mm/slub.c
index 36c0befeebd8..9d16ca30bc2a 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -3603,6 +3603,7 @@ static int kmem_cache_open(struct kmem_cache *s, slab_flags_t flags)
 		if (get_order(s->size) > get_order(s->object_size)) {
 			s->flags &= ~DEBUG_METADATA_FLAGS;
 			s->offset = 0;
+			s->red_left_pad = 0;
 			if (!calculate_sizes(s, -1))
 				goto error;
 		}
-- 
2.19.1