linux-kernel - Re: [PATCH 0/8] slab: provide and use krealloc

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Message-ID: <CACRpkdYbpOZGmWONeOQFY7DE+t2ev30DQQ-8cxrJNoK9fVVunA@mail.gmail.com>
Date:   Thu, 5 Nov 2020 11:52:30 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Bartosz Golaszewski <brgl@...ev.pl>
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Sumit Semwal <sumit.semwal@...aro.org>,
        Gustavo Padovan <gustavo@...ovan.org>,
        Christian König <christian.koenig@....com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Borislav Petkov <bp@...en8.de>,
        Tony Luck <tony.luck@...el.com>,
        James Morse <james.morse@....com>,
        Robert Richter <rric@...nel.org>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        "Michael S . Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        Christoph Lameter <cl@...ux.com>,
        Pekka Enberg <penberg@...nel.org>,
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        Joonsoo Kim <iamjoonsoo.kim@....com>,
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        Linux Media Mailing List <linux-media@...r.kernel.org>,
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        <alsa-devel@...a-project.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: Re: [PATCH 0/8] slab: provide and use krealloc_array()

On Tue, Oct 27, 2020 at 1:17 PM Bartosz Golaszewski <brgl@...ev.pl> wrote:

> From: Bartosz Golaszewski <bgolaszewski@...libre.com>
>
> Andy brought to my attention the fact that users allocating an array of
> equally sized elements should check if the size multiplication doesn't
> overflow. This is why we have helpers like kmalloc_array().
>
> However we don't have krealloc_array() equivalent and there are many
> users who do their own multiplication when calling krealloc() for arrays.
>
> This series provides krealloc_array() and uses it in a couple places.
>
> A separate series will follow adding devm_krealloc_array() which is
> needed in the xilinx adc driver.

The series:
Acked-by: Linus Walleij <linus.walleij@...aro.org>

I really like this.

Yours,
Linus Walleij