linux-kernel - Re: [PATCH 0/3] mincore() and IOCB

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Date:   Wed, 6 Mar 2019 14:35:47 -0800
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Jiri Kosina <jikos@...nel.org>
Cc:     Vlastimil Babka <vbabka@...e.cz>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        linux-api@...r.kernel.org, Peter Zijlstra <peterz@...radead.org>,
        Greg KH <gregkh@...uxfoundation.org>,
        Jann Horn <jannh@...gle.com>,
        Andy Lutomirski <luto@...capital.net>,
        Cyril Hrubis <chrubis@...e.cz>, Daniel Gruss <daniel@...ss.cc>,
        Dave Chinner <david@...morbit.com>,
        Dominique Martinet <asmadeus@...ewreck.org>,
        Kevin Easton <kevin@...rana.org>,
        "Kirill A. Shutemov" <kirill@...temov.name>,
        Matthew Wilcox <willy@...radead.org>, Tejun Heo <tj@...nel.org>
Subject: Re: [PATCH 0/3] mincore() and IOCB_NOWAIT adjustments

On Wed, 6 Mar 2019 13:11:39 +0100 (CET) Jiri Kosina <jikos@...nel.org> wrote:

> On Wed, 30 Jan 2019, Vlastimil Babka wrote:
> 
> > I've collected the patches from the discussion for formal posting. The first
> > two should be settled already, third one is the possible improvement I've
> > mentioned earlier, where only in restricted case we resort to existence of page
> > table mapping (the original and later reverted approach from Linus) instead of
> > faking the result completely. Review and testing welcome.
> > 
> > The consensus seems to be going through -mm tree for 5.1, unless Linus wants
> > them alredy for 5.0.
> > 
> > Jiri Kosina (2):
> >   mm/mincore: make mincore() more conservative
> >   mm/filemap: initiate readahead even if IOCB_NOWAIT is set for the I/O
> > 
> > Vlastimil Babka (1):
> >   mm/mincore: provide mapped status when cached status is not allowed
> 
> Andrew,
> 
> could you please take at least the correct and straightforward fix for 
> mincore() before we figure out how to deal with the slightly less 
> practical RWF_NOWAIT? Thanks.

I assume we're talking about [1/3] and [2/3] from this thread?

Can we have a resend please?  Gather the various acks and revisions,
make changelog changes to address the review questions and comments?

Thanks.