linux-kernel - Re: [PATCH v2 1/6] fs/readdir: Fix filldir() and filldir64() use of user_access

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Message-ID: <75590182-8291-9030-c0bf-b11c6b4fccec@c-s.fr>
Date:   Thu, 23 Jan 2020 07:27:04 +0100
From:   Christophe Leroy <christophe.leroy@....fr>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        Linux-MM <linux-mm@...ck.org>
Subject: Re: [PATCH v2 1/6] fs/readdir: Fix filldir() and filldir64() use of
 user_access_begin()



Le 22/01/2020 à 21:37, Linus Torvalds a écrit :
> [ Talking to myself ]
> 
> On Wed, Jan 22, 2020 at 12:00 PM Linus Torvalds
> <torvalds@...ux-foundation.org> wrote:
>>
>> COMPLETELY UNTESTED! It compiles for me. The generated assembly looks
>> ok from a quick look.
> 
> 
> So here's a slightly updated patch that does exactly that, and avoids
> the objtool warning.
> 
> It actually generates better code than the last one too, because now
> we don't duplicate the user_access_end() for the EINTR case.
> 
> So test this one instead, please.

This patch works on my ppc board, thanks

Christophe