linux-kernel - Re: [PATCH v5 04/14] mm/gup: check for isolation errors

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Message-ID: <CA+CK2bDwFuwgNa3mYHTvBJWYTM+gLaeKS4TBYCjqWzag3kEagw@mail.gmail.com>
Date:   Tue, 19 Jan 2021 13:27:45 -0500
From:   Pavel Tatashin <pasha.tatashin@...een.com>
To:     Jason Gunthorpe <jgg@...pe.ca>
Cc:     LKML <linux-kernel@...r.kernel.org>, linux-mm <linux-mm@...ck.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Vlastimil Babka <vbabka@...e.cz>,
        Michal Hocko <mhocko@...e.com>,
        David Hildenbrand <david@...hat.com>,
        Oscar Salvador <osalvador@...e.de>,
        Dan Williams <dan.j.williams@...el.com>,
        Sasha Levin <sashal@...nel.org>,
        Tyler Hicks <tyhicks@...ux.microsoft.com>,
        Joonsoo Kim <iamjoonsoo.kim@....com>, mike.kravetz@...cle.com,
        Steven Rostedt <rostedt@...dmis.org>,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Mel Gorman <mgorman@...e.de>,
        Matthew Wilcox <willy@...radead.org>,
        David Rientjes <rientjes@...gle.com>,
        John Hubbard <jhubbard@...dia.com>,
        Linux Doc Mailing List <linux-doc@...r.kernel.org>,
        Ira Weiny <ira.weiny@...el.com>,
        linux-kselftest@...r.kernel.org
Subject: Re: [PATCH v5 04/14] mm/gup: check for isolation errors

> This should have a fixme too, this is a bug.

OK

>
> The patch looks OK, but I keep feeling this logic is all really
> overcomplicated...

I agree, I have a simplification patch for this logic, check out patch 12/14.

>
> Reviewed-by: Jason Gunthorpe <jgg@...dia.com>

Thank you for your review.

Pasha