linux-kernel - Re: [PATCH 2/2] auxdisplay/ht16k33.c: Convert to use vm_map_pages

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Message-ID: <CANiq72=zCD7AAE-OBzDYm5GXenoF48SdzwO1LunWSfexqBuH7A@mail.gmail.com>
Date:   Fri, 24 May 2019 06:22:02 +0200
From:   Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To:     Souptick Joarder <jrdr.linux@...il.com>
Cc:     Robin van der Gracht <robin@...tonic.nl>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Matthew Wilcox <willy@...radead.org>
Subject: Re: [PATCH 2/2] auxdisplay/ht16k33.c: Convert to use vm_map_pages_zero()

On Thu, May 23, 2019 at 2:58 PM Miguel Ojeda
<miguel.ojeda.sandonis@...il.com> wrote:
>
> Taking a quick look now, by the way, why does vm_map_pages_zero() (and
> __vm_map_pages() etc.) get a pointer to an array instead of a pointer
> to the first element?

Also, in __vm_map_pages(), semantically w.r.t. to the comment,
shouldn't the first check test for equality too? (i.e. for vm_pgoff ==
num)? (even if such case fails in the second test anyway).

Cheers,
Miguel