From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx120.postini.com [74.125.245.120]) by kanga.kvack.org (Postfix) with SMTP id 7E4F06B00B4 for ; Mon, 1 Oct 2012 23:16:58 -0400 (EDT) Received: by pbbrq2 with SMTP id rq2so9494144pbb.14 for ; Mon, 01 Oct 2012 20:16:57 -0700 (PDT) Date: Mon, 1 Oct 2012 20:16:55 -0700 (PDT) From: David Rientjes Subject: Re: [PATCH v2] slab: Ignore internal flags in cache creation In-Reply-To: <1349088458-3940-1-git-send-email-glommer@parallels.com> Message-ID: References: <1349088458-3940-1-git-send-email-glommer@parallels.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Glauber Costa Cc: Pekka Enberg , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Christoph Lameter , Pekka Enberg On Mon, 1 Oct 2012, Glauber Costa wrote: > diff --git a/mm/slab_common.c b/mm/slab_common.c > index 9c21725..f2682ee 100644 > --- a/mm/slab_common.c > +++ b/mm/slab_common.c > @@ -107,6 +107,15 @@ struct kmem_cache *kmem_cache_create(const char *name, size_t size, size_t align > if (!kmem_cache_sanity_check(name, size) == 0) > goto out_locked; > > + /* > + * Some allocators will constraint the set of valid flags to a subset > + * of all flags. We expect them to define CACHE_CREATE_MASK in this > + * case, and we'll just provide them with a sanitized version of the > + * passed flags. > + */ > +#ifdef CACHE_CREATE_MASK > + flags &= ~CACHE_CREATE_MASK; > +#endif > > s = __kmem_cache_alias(name, size, align, flags, ctor); > if (s) flags &= CACHE_CREATE_MASK After that's done: Acked-by: David Rientjes Thanks for working through this. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org