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From: Christoph Lameter <cl@linux.com>
To: JoonSoo Kim <js1304@gmail.com>
Cc: Pekka Enberg <penberg@kernel.org>,
	linux-mm@kvack.org, David Rientjes <rientjes@google.com>,
	Matt Mackall <mpm@selenic.com>,
	Glauber Costa <glommer@parallels.com>,
	Alex Shi <alex.shi@intel.com>
Subject: Re: [RFC] Common code 07/12] slabs: Move kmem_cache_create mutex handling to common code
Date: Tue, 22 May 2012 12:51:18 -0500 (CDT)	[thread overview]
Message-ID: <alpine.DEB.2.00.1205221250270.21828@router.home> (raw)
In-Reply-To: <CAAmzW4Nt0S-xmwmHhw0AJEikE91pZpnCS+NQosrxAaUDi59pew@mail.gmail.com>

[-- Attachment #1: Type: TEXT/PLAIN, Size: 1330 bytes --]

On Wed, 23 May 2012, JoonSoo Kim wrote:

> 2012/5/19 Christoph Lameter <cl@linux.com>:
> > Move the mutex handling into the common kmem_cache_create()
> > function.
> >
> >                        list_add(&s->list, &slab_caches);
> >                        mutex_unlock(&slab_mutex);
> > -                       if (sysfs_slab_add(s)) {
> > -                               mutex_lock(&slab_mutex);
> > -                               list_del(&s->list);
> > -                               kfree(n);
> > -                               kfree(s);
> > -                               goto err;
> > -                       }
> > -                       return s;
> > +                       r = sysfs_slab_add(s);
> > +                       mutex_lock(&slab_mutex);
> > +
> > +                       if (!r)
> > +                               return s;
> > +
> > +                       list_del(&s->list);
> > +                       kmem_cache_close(s);
> >                }
> > -               kfree(n);
> >                kfree(s);
> >        }
>
> Before this patch is applied, can we move calling 'sysfs_slab_add' to
> common code
> for removing slab_mutex entirely in kmem_cache_create?

Hmmm... its difficult to do that before this patch since sysfs_slab_add
requires dropping the mutex.

  reply	other threads:[~2012-05-22 17:51 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-05-18 16:19 [RFC] Common code 00/12] Sl[auo]b: Common functionality V2 Christoph Lameter
2012-05-18 16:19 ` [RFC] Common code 01/12] [slob] define page struct fields used in mm_types.h Christoph Lameter
2012-05-21  8:41   ` Glauber Costa
2012-05-22 14:22   ` JoonSoo Kim
2012-05-22 17:42     ` Christoph Lameter
2012-05-23 14:28       ` JoonSoo Kim
2012-05-18 16:19 ` [RFC] Common code 02/12] [slab]: Use page struct fields instead of casting Christoph Lameter
2012-05-22 14:28   ` JoonSoo Kim
2012-05-18 16:19 ` [RFC] Common code 03/12] Extract common fields from struct kmem_cache Christoph Lameter
2012-05-21  9:21   ` Glauber Costa
2012-05-22 14:39     ` JoonSoo Kim
2012-05-18 16:19 ` [RFC] Common code 04/12] slabs: Extract common code for kmem_cache_create Christoph Lameter
2012-05-21  9:24   ` Glauber Costa
2012-05-21 13:48     ` Christoph Lameter
2012-05-22 15:08   ` JoonSoo Kim
2012-05-22 15:23     ` Glauber Costa
2012-05-22 17:49     ` Christoph Lameter
2012-05-18 16:19 ` [RFC] Common code 05/12] slabs: Common definition for boot state of the slab allocators Christoph Lameter
2012-05-21  9:26   ` Glauber Costa
2012-05-22 15:34     ` JoonSoo Kim
2012-05-18 16:19 ` [RFC] Common code 06/12] slabs: Use a common mutex definition Christoph Lameter
2012-05-22 15:44   ` JoonSoo Kim
2012-05-18 16:19 ` [RFC] Common code 07/12] slabs: Move kmem_cache_create mutex handling to common code Christoph Lameter
2012-05-22 16:19   ` JoonSoo Kim
2012-05-22 17:51     ` Christoph Lameter [this message]
2012-05-18 16:19 ` [RFC] Common code 09/12] slabs: Extract a common function for kmem_cache_destroy Christoph Lameter
2012-05-21  9:34   ` Glauber Costa
2012-05-21 18:13     ` Christoph Lameter
2012-05-21 19:19       ` Glauber Costa
2012-05-21 19:31         ` Christoph Lameter
2012-05-21 20:06           ` Glauber Costa
2012-05-21 20:54             ` Christoph Lameter
2012-05-23 15:39   ` JoonSoo Kim
2012-05-23 15:42     ` Christoph Lameter
2012-05-18 16:19 ` [RFC] Common code 10/12] sl[aub]: Use the name "kmem_cache" for the slab cache with the kmem_cache structure Christoph Lameter
2012-05-21  9:35   ` Glauber Costa
2012-05-23 16:17     ` JoonSoo Kim
2012-05-18 16:19 ` [RFC] Common code 11/12] Move freeing of kmem_cache structure to common code Christoph Lameter
2012-05-23 16:17   ` JoonSoo Kim
2012-05-18 16:19 ` [RFC] Common code 12/12] [slauob]: Get rid of __kmem_cache_destroy Christoph Lameter
2012-05-23 16:42   ` JoonSoo Kim
     [not found] ` <20120518161931.570041085@linux.com>
2012-05-21  9:27   ` [RFC] Common code 08/12] slabs: list addition move to slab_common Glauber Costa
2012-05-22 16:22     ` JoonSoo Kim
2012-05-21  9:38 ` [RFC] Common code 00/12] Sl[auo]b: Common functionality V2 Glauber Costa
2012-05-21 13:51   ` Christoph Lameter
2012-05-21 14:15     ` Glauber Costa
2012-06-11  2:25 ` Alex Shi
2012-06-29  3:17   ` Alex Shi

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