Re: [PATCH v2 5/4] mm: Use is_cow_mapping() across tree where proper

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To: Peter Xu <peterx@xxxxxxxxxx>
Subject: Re: [PATCH v2 5/4] mm: Use is_cow_mapping() across tree where proper
From: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Date: Thu, 4 Feb 2021 12:26:04 -0800
Cc: Linux-MM <linux-mm@xxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Mike Kravetz <mike.kravetz@xxxxxxxxxx>, Jan Kara <jack@xxxxxxx>, Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Christoph Hellwig <hch@xxxxxx>, Kirill Tkhai <ktkhai@xxxxxxxxxxxxx>, David Gibson <david@xxxxxxxxxxxxxxxxxxxxx>, Jason Gunthorpe <jgg@xxxxxxxx>, Andrea Arcangeli <aarcange@xxxxxxxxxx>, Miaohe Lin <linmiaohe@xxxxxxxxxx>, Gal Pressman <galpress@xxxxxxxxxx>, Wei Zhang <wzam@xxxxxxxxxx>, Matthew Wilcox <willy@xxxxxxxxxxxxx>, Jann Horn <jannh@xxxxxxxxxx>, Kirill Shutemov <kirill@xxxxxxxxxxxxx>, VMware Graphics <linux-graphics-maintainer@xxxxxxxxxx>, Roland Scheidegger <sroland@xxxxxxxxxx>, David Airlie <airlied@xxxxxxxx>, Daniel Vetter <daniel@xxxxxxxx>, Alexey Dobriyan <adobriyan@xxxxxxxxx>
In-reply-to: <20210204202055.192260-1-peterx@redhat.com>
References: <20210204145033.136755-1-peterx@redhat.com> <20210204202055.192260-1-peterx@redhat.com>

On Thu, Feb 4, 2021 at 12:21 PM Peter Xu <peterx@xxxxxxxxxx> wrote:
>
> After is_cow_mapping() is exported in mm.h, replace some manual checks
> elsewhere throughout the tree but start to use the new helper.

Thanks,

                  Linus

References:
- [PATCH v2 0/4] mm/hugetlb: Early cow on fork, and a few cleanups
  - From: Peter Xu
- [PATCH v2 5/4] mm: Use is_cow_mapping() across tree where proper
  - From: Peter Xu

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