linux-kernel - Re: [PATCH v9 00/24] Speculative page faults

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Message-ID: <20180314131118.GC23100@dhcp22.suse.cz>
Date:   Wed, 14 Mar 2018 14:11:18 +0100
From:   Michal Hocko <mhocko@...nel.org>
To:     Laurent Dufour <ldufour@...ux.vnet.ibm.com>
Cc:     paulmck@...ux.vnet.ibm.com, peterz@...radead.org,
        akpm@...ux-foundation.org, kirill@...temov.name,
        ak@...ux.intel.com, dave@...olabs.net, jack@...e.cz,
        Matthew Wilcox <willy@...radead.org>, benh@...nel.crashing.org,
        mpe@...erman.id.au, paulus@...ba.org,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, hpa@...or.com,
        Will Deacon <will.deacon@....com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Andrea Arcangeli <aarcange@...hat.com>,
        Alexei Starovoitov <alexei.starovoitov@...il.com>,
        kemi.wang@...el.com, sergey.senozhatsky.work@...il.com,
        Daniel Jordan <daniel.m.jordan@...cle.com>,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        haren@...ux.vnet.ibm.com, khandual@...ux.vnet.ibm.com,
        npiggin@...il.com, bsingharora@...il.com,
        Tim Chen <tim.c.chen@...ux.intel.com>,
        linuxppc-dev@...ts.ozlabs.org, x86@...nel.org
Subject: Re: [PATCH v9 00/24] Speculative page faults

On Tue 13-03-18 18:59:30, Laurent Dufour wrote:
> Changes since v8:
>  - Don't check PMD when locking the pte when THP is disabled
>    Thanks to Daniel Jordan for reporting this.
>  - Rebase on 4.16

Is this really worth reposting the whole pile? I mean this is at v9,
each doing little changes. It is quite tiresome to barely get to a
bookmarked version just to find out that there are 2 new versions out.

I am sorry to be grumpy and I can understand some frustration it doesn't
move forward that easilly but this is a _big_ change. We should start
with a real high level review rather than doing small changes here and
there and reach v20 quickly.

I am planning to find some time to look at it but the spare cycles are
so rare these days...
-- 
Michal Hocko
SUSE Labs