linux-kernel - Re: [PATCH 0/8] simplify ep

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAHk-=whM-Cm52o1kBQD4eS3Wx=XWr_z7sq=H88pmyeK_9L0=VQ@mail.gmail.com>
Date:   Fri, 6 Nov 2020 15:35:22 -0800
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Soheil Hassas Yeganeh <soheil.kdev@...il.com>
Cc:     Al Viro <viro@...iv.linux.org.uk>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Davidlohr Bueso <dave@...olabs.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Willem de Bruijn <willemb@...gle.com>,
        Khazhismel Kumykov <khazhy@...gle.com>,
        Guantao Liu <guantaol@...gle.com>,
        Soheil Hassas Yeganeh <soheil@...gle.com>
Subject: Re: [PATCH 0/8] simplify ep_poll

On Fri, Nov 6, 2020 at 3:17 PM Soheil Hassas Yeganeh
<soheil.kdev@...il.com> wrote:
>
> The first patch in the series is a fix for the epoll race in
> presence of timeouts, so that it can be cleanly backported to all
> affected stable kernels.
>
> The rest of the patch series simplify the ep_poll() implementation.
> Some of these simplifications result in minor performance enhancements
> as well.  We have kept these changes under self tests and internal
> benchmarks for a few days, and there are minor (1-2%) performance
> enhancements as a result.

>From just looking at the patches (not the end result - I didn't
actually apply them), it looks sane to me.

             Linus