linux-kernel - Re: [PATCH v3 06/16] mm/rmap: remove do_page_add_anon

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Message-ID: <2cbc3b75-e29e-bbd8-0522-a3757f81b5c6@suse.cz>
Date:   Tue, 12 Apr 2022 10:13:50 +0200
From:   Vlastimil Babka <vbabka@...e.cz>
To:     David Hildenbrand <david@...hat.com>, linux-kernel@...r.kernel.org
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Hugh Dickins <hughd@...gle.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        David Rientjes <rientjes@...gle.com>,
        Shakeel Butt <shakeelb@...gle.com>,
        John Hubbard <jhubbard@...dia.com>,
        Jason Gunthorpe <jgg@...dia.com>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        Yang Shi <shy828301@...il.com>,
        "Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>,
        Matthew Wilcox <willy@...radead.org>,
        Jann Horn <jannh@...gle.com>, Michal Hocko <mhocko@...nel.org>,
        Nadav Amit <namit@...are.com>, Rik van Riel <riel@...riel.com>,
        Roman Gushchin <guro@...com>,
        Andrea Arcangeli <aarcange@...hat.com>,
        Peter Xu <peterx@...hat.com>,
        Donald Dutile <ddutile@...hat.com>,
        Christoph Hellwig <hch@....de>,
        Oleg Nesterov <oleg@...hat.com>, Jan Kara <jack@...e.cz>,
        Liang Zhang <zhangliang5@...wei.com>,
        Pedro Gomes <pedrodemargomes@...il.com>,
        Oded Gabbay <oded.gabbay@...il.com>, linux-mm@...ck.org
Subject: Re: [PATCH v3 06/16] mm/rmap: remove do_page_add_anon_rmap()

On 3/29/22 18:04, David Hildenbrand wrote:
> ... and instead convert page_add_anon_rmap() to accept flags.
> 
> Passing flags instead of bools is usually nicer either way, and we want
> to more often also pass RMAP_EXCLUSIVE in follow up patches when
> detecting that an anonymous page is exclusive: for example, when
> restoring an anonymous page from a writable migration entry.
> 
> This is a preparation for marking an anonymous page inside
> page_add_anon_rmap() as exclusive when RMAP_EXCLUSIVE is passed.
> 
> Signed-off-by: David Hildenbrand <david@...hat.com>

Acked-by: Vlastimil Babka <vbabka@...e.cz>