From: Ezequiel Garcia <elezegarcia@gmail.com>
To: David Rientjes <rientjes@google.com>
Cc: linux-mm@kvack.org, Pekka Enberg <penberg@kernel.org>,
Christoph Lameter <cl@linux.com>
Subject: Re: [PATCH 3/5] mm, util: Do strndup_user allocation directly, instead of through memdup_user
Date: Wed, 5 Sep 2012 22:06:05 -0300 [thread overview]
Message-ID: <CALF0-+WgAicBOv6beNdfkFFS-DuAZMQfH9r9iYG5tkfFNSzRZg@mail.gmail.com> (raw)
In-Reply-To: <alpine.DEB.2.00.1209051757250.7625@chino.kir.corp.google.com>
Hi David,
On Wed, Sep 5, 2012 at 9:59 PM, David Rientjes <rientjes@google.com> wrote:
> On Wed, 5 Sep 2012, Ezequiel Garcia wrote:
>
>> I'm not sure this is the best solution,
>> but creating another function to reuse between strndup_user
>> and memdup_user seemed like an overkill.
>>
>
> It's not, so you'd need to do two things to fix this:
>
> - provide a reason why strndup_user() is special compared to other
> common library functions that also allocate memory, and
>
Sorry, I don't understand what you mean.
strndup_user is *not* special than any other function, simply if you use
memdup_user for the allocation you will get traces with strndup_user
as the caller,
and that's not desirable.
Thanks for reviewing,
Ezequiel.
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next prev parent reply other threads:[~2012-09-06 1:06 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-05 22:48 [PATCH 1/5] mm, slab: Remove silly function slab_buffer_size() Ezequiel Garcia
2012-09-05 22:48 ` [PATCH 2/5] mm, slob: Add support for kmalloc_track_caller() Ezequiel Garcia
2012-09-06 0:57 ` David Rientjes
2012-09-06 1:10 ` Ezequiel Garcia
2012-09-06 7:17 ` Pekka Enberg
2012-09-05 22:48 ` [PATCH 3/5] mm, util: Do strndup_user allocation directly, instead of through memdup_user Ezequiel Garcia
2012-09-06 0:59 ` David Rientjes
2012-09-06 1:06 ` Ezequiel Garcia [this message]
2012-09-06 19:27 ` JoonSoo Kim
2012-09-07 0:00 ` Ezequiel Garcia
2012-09-07 21:12 ` JoonSoo Kim
2012-09-05 22:48 ` [PATCH 4/5] mm, slob: Use only 'ret' variable for both slob object and returned pointer Ezequiel Garcia
2012-09-06 14:18 ` Christoph Lameter
2012-09-06 15:04 ` Ezequiel Garcia
2012-09-05 22:48 ` [PATCH 5/5] mm, slob: Trace allocation failures consistently Ezequiel Garcia
2012-09-06 19:09 ` JoonSoo Kim
2012-09-07 0:03 ` Ezequiel Garcia
2012-09-07 21:23 ` JoonSoo Kim
2012-09-08 13:26 ` Ezequiel Garcia
2012-09-07 21:50 ` JoonSoo Kim
2012-09-07 22:00 ` JoonSoo Kim
2012-09-06 0:54 ` [PATCH 1/5] mm, slab: Remove silly function slab_buffer_size() David Rientjes
2012-09-06 1:07 ` Ezequiel Garcia
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