Re: [PATCH] proc_do_large_bitmap - return error on writes to non-existant bitmap

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To: Maciej Żenczykowski <zenczykowski@xxxxxxxxx>
Subject: Re: [PATCH] proc_do_large_bitmap - return error on writes to non-existant bitmap
From: Iurii Zaikin <yzaikin@xxxxxxxxxx>
Date: Mon, 2 Dec 2019 10:44:03 -0800
Cc: Maciej Żenczykowski <maze@xxxxxxxxxx>, Luis Chamberlain <mcgrof@xxxxxxxxxx>, Kees Cook <keescook@xxxxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Linus FS Devel Mailing List <linux-fsdevel@xxxxxxxxxxxxxxx>
In-reply-to: <20191127095459.168324-1-zenczykowski@gmail.com>

On Wed, Nov 27, 2019 at 1:55 AM Maciej Żenczykowski
<zenczykowski@xxxxxxxxx> wrote:
> We return ENOMEDIUM 'No medium found', because it's the best error
> I could come up with to describe the situation.
EFAULT for bitmap == NULL and
EINVAL for bitmap_len == 0?

References:
- [PATCH] proc_do_large_bitmap - return error on writes to non-existant bitmap
  - From: Maciej Żenczykowski

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