From: ecashin@noserose.net
To: linux-kernel <linux-kernel@vger.kernel.org>
Cc: Arjan van de Ven <arjan@infradead.org>, Greg K-H <greg@kroah.com>
Subject: Re: [PATCH 2.6.11] aoe [5/12]: don't try to free null bufpool
Date: Thu, 24 Mar 2005 09:04:13 -0800 [thread overview]
Message-ID: <1111683853.31205@geode.he.net> (raw)
In-Reply-To: 1111679884.6290.93.camel@laptopd505.fenrus.org
Arjan van de Ven <arjan@infradead.org> writes:
> On Thu, 2005-03-24 at 07:17 -0800, ecashin@noserose.net wrote:
>> don't try to free null bufpool
>
> in linux there is a "rule" that all memory free routines are supposed to
> also accept NULL as argument, so I think this patch is not needed (and
> even wrong)
>
Hmm. The mm/mempool.c:mempool_destroy function immediately
dereferences the pointer passed to it:
void mempool_destroy(mempool_t *pool)
{
if (pool->curr_nr != pool->min_nr)
BUG(); /* There were outstanding elements */
free_pool(pool);
}
... so I'm not sure mempool_destroy fits the rule. Are you suggesting
that the patch should instead modify mempool_destroy?
--
Ed L Cashin <ecashin@coraid.com>
next prev parent reply other threads:[~2005-03-24 17:04 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <87mztbi79d.fsf@coraid.com>
2005-03-17 23:46 ` [PATCH 2.6.11] aoe [1/12]: remove too-low cap on minor number Greg KH
2005-03-18 20:13 ` Ed L Cashin
2005-03-18 20:14 ` [PATCH 2.6.11] aoe [4/12]: handle distros that have a udev rules file instead of dir Ed L. Cashin
2005-03-24 14:59 ` [PATCH 2.6.11] aoe [1/12]: remove too-low cap on minor number ecashin
2005-03-24 15:09 ` [PATCH 2.6.11] aoe [2/12]: allow multiple aoe devices with same MAC addr ecashin
2005-03-24 15:13 ` [PATCH 2.6.11] aoe [3/12]: update driver version to 6 ecashin
2005-03-24 15:15 ` [PATCH 2.6.11] aoe [4/12]: handle distros that have a udev rules file instead of dir ecashin
2005-03-24 15:17 ` [PATCH 2.6.11] aoe [5/12]: don't try to free null bufpool ecashin
2005-03-24 15:58 ` Arjan van de Ven
2005-03-24 17:04 ` ecashin [this message]
2005-03-24 17:17 ` Arjan van de Ven
2005-03-25 14:37 ` Jesper Juhl
2005-03-29 12:31 ` Jens Axboe
2005-03-24 15:19 ` [PATCH 2.6.11] aoe [6/12]: Alexey Dobriyan sparse cleanup ecashin
2005-03-24 15:21 ` [PATCH 2.6.11] aoe [7/12]: support configuration of AOE_PARTITIONS from Kconfig ecashin
2005-03-28 17:07 ` Christoph Hellwig
2005-03-29 16:06 ` Ed L Cashin
2005-03-29 16:25 ` Christoph Hellwig
2005-03-29 16:48 ` Ed L Cashin
2005-03-29 16:57 ` Christoph Hellwig
2005-04-07 18:28 ` Ed L Cashin
2005-04-07 18:49 ` Greg KH
2005-04-07 18:56 ` Ed L Cashin
2005-04-07 23:08 ` Greg KH
2005-04-08 13:54 ` Ed L Cashin
2005-03-24 15:23 ` [PATCH 2.6.11] aoe [8/12]: document env var for specifying number of partitions per dev ecashin
2005-03-24 15:25 ` [PATCH 2.6.11] aoe [9/12]: add note about the need for deadlock-free sk_buff allocation ecashin
2005-03-24 15:27 ` [PATCH 2.6.11] aoe [10/12]: Randy Dunlap: avoid warnings on sparc64 ecashin
2005-03-24 15:30 ` [PATCH 2.6.11] aoe [11/12]: add support for disk statistics ecashin
2005-03-24 15:32 ` [PATCH 2.6.11] aoe [12/12]: send outgoing packets in order ecashin
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