From: David Rientjes <rientjes@google.com>
To: Christoph Lameter <cl@linux.com>
Cc: Glauber Costa <glommer@parallels.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Michal Hocko <mhocko@suse.cz>,
Pekka Enberg <penberg@cs.helsinki.fi>
Subject: Re: [PATCH] slab: Ignore internal flags in cache creation
Date: Thu, 27 Sep 2012 15:52:10 -0700 (PDT) [thread overview]
Message-ID: <alpine.DEB.2.00.1209271551220.13360@chino.kir.corp.google.com> (raw)
In-Reply-To: <0000013a0804637a-82ca7649-bc6c-42ef-9a2c-e79b63f47a23-000000@email.amazonses.com>
On Thu, 27 Sep 2012, Christoph Lameter wrote:
> > > > Nack, this is already handled by CREATE_MASK in the mm/slab.c allocator;
> > >
> > > CREATE_MASK defines legal flags that can be specified. Other flags cause
> > > and error. This is about flags that are internal that should be ignored
> > > when specified.
> > >
> >
> > That should be ignored for the mm/slab.c allocator, yes.
>
> Then you are ok with the patch as is?
>
No, it's implementation defined so it shouldn't be in kmem_cache_create(),
it should be in __kmem_cache_create().
> There *are* multiple slab allocators using those bits! And this works for
> them. There is nothing too restrictive here. The internal flags are
> standardized by this patch to be in the highest nibble.
>
I'm referring to additional slab allocators that will be proposed for
inclusion shortly.
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next prev parent reply other threads:[~2012-09-27 22:52 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-25 11:17 Glauber Costa
2012-09-25 16:26 ` Christoph Lameter
2012-09-26 0:46 ` David Rientjes
2012-09-26 8:43 ` Glauber Costa
2012-09-27 1:16 ` David Rientjes
2012-09-27 6:59 ` Glauber Costa
2012-09-27 22:56 ` David Rientjes
2012-09-28 7:46 ` Glauber Costa
2012-09-28 20:25 ` David Rientjes
2012-09-28 14:12 ` Christoph Lameter
2012-09-28 20:39 ` David Rientjes
2012-09-28 21:20 ` Christoph Lameter
2012-09-28 23:11 ` David Rientjes
2012-10-01 17:54 ` Christoph Lameter
2012-10-01 7:28 ` Pekka Enberg
2012-10-01 7:58 ` Glauber Costa
2012-09-27 13:54 ` Christoph Lameter
2012-09-27 22:50 ` David Rientjes
2012-09-28 14:04 ` Christoph Lameter
2012-09-28 20:36 ` David Rientjes
2012-09-26 14:57 ` Christoph Lameter
2012-09-27 1:12 ` David Rientjes
2012-09-27 13:57 ` Christoph Lameter
2012-09-27 22:52 ` David Rientjes [this message]
2012-09-28 14:10 ` Christoph Lameter
2012-09-28 20:30 ` David Rientjes
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