From: Ron <ron@debian.org>
To: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: cl@linux-foundation.org, mpm@selenic.com, linux-mm@kvack.org,
akinobu.mita@gmail.com, linux-kernel@vger.kernel.org
Subject: [PATCH] slab: add missing guard for kernel_map_pages() use
Date: Fri, 22 May 2009 18:20:40 +0930 [thread overview]
Message-ID: <20090522085040.GC4448@homer.shelbyville.oz> (raw)
In-Reply-To: <1242979372.13681.1.camel@penberg-laptop>
All other uses of kernel_map_pages() are explicitly excluded without
CONFIG_DEBUG_PAGEALLOC, this one should be too.
Signed-off-by: Ron Lee <ron@debian.org>
diff --git a/mm/slab.c b/mm/slab.c
index 9a90b00..b5e5b27 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -2674,10 +2683,12 @@ static void cache_init_objs(struct kmem_cache *cachep,
slab_error(cachep, "constructor overwrote the"
" start of an object");
}
+#ifdef CONFIG_DEBUG_PAGEALLOC
if ((cachep->buffer_size % PAGE_SIZE) == 0 &&
OFF_SLAB(cachep) && cachep->flags & SLAB_POISON)
kernel_map_pages(virt_to_page(objp),
cachep->buffer_size / PAGE_SIZE, 0);
+#endif
#else
if (cachep->ctor)
cachep->ctor(objp);
--
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next prev parent reply other threads:[~2009-05-22 8:50 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-21 19:28 [PATCH] slab: fix generic PAGE_POISONING conflict with SLAB_RED_ZONE Ron
2009-05-22 8:02 ` Pekka Enberg
2009-05-22 8:50 ` Ron [this message]
2009-05-22 10:17 ` [PATCH] slab: add missing guard for kernel_map_pages() use Ron
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