linux-kernel - Re: [PATCH v2 2/4] mm/fork: Pass new vma pointer into copy_page

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Message-ID: <20200930170511.GA130406@xz-x1>
Date:   Wed, 30 Sep 2020 13:05:11 -0400
From:   Peter Xu <peterx@...hat.com>
To:     "Kirill A. Shutemov" <kirill@...temov.name>
Cc:     linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        Jason Gunthorpe <jgg@...pe.ca>,
        John Hubbard <jhubbard@...dia.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Christoph Hellwig <hch@....de>, Yang Shi <shy828301@...il.com>,
        Oleg Nesterov <oleg@...hat.com>,
        Kirill Tkhai <ktkhai@...tuozzo.com>,
        Hugh Dickins <hughd@...gle.com>, Jann Horn <jannh@...gle.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Michal Hocko <mhocko@...e.com>, Jan Kara <jack@...e.cz>,
        Andrea Arcangeli <aarcange@...hat.com>,
        Leon Romanovsky <leonro@...dia.com>
Subject: Re: [PATCH v2 2/4] mm/fork: Pass new vma pointer into
 copy_page_range()

On Wed, Sep 30, 2020 at 04:30:55PM +0300, Kirill A. Shutemov wrote:
> >  int copy_page_range(struct mm_struct *dst, struct mm_struct *src,
> > -			struct vm_area_struct *vma);
> > +		    struct vm_area_struct *vma, struct vm_area_struct *new);
> 
> It makes dst/src mm_struct arguments redundant. There's always vma->vm_mm.

Indeed.  I'll post a patch later for it.  Thanks.

-- 
Peter Xu