linux-kernel - Re: [PATCH v6 3/6] mm: rmap: introduce pfn_mkclean

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Date:   Wed, 30 Mar 2022 15:31:37 +0800
From:   Muchun Song <songmuchun@...edance.com>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     Dan Williams <dan.j.williams@...el.com>,
        Matthew Wilcox <willy@...radead.org>, Jan Kara <jack@...e.cz>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Alistair Popple <apopple@...dia.com>,
        Yang Shi <shy828301@...il.com>,
        Ralph Campbell <rcampbell@...dia.com>,
        Hugh Dickins <hughd@...gle.com>,
        Xiyu Yang <xiyuyang19@...an.edu.cn>,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        Ross Zwisler <zwisler@...nel.org>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        Linux NVDIMM <nvdimm@...ts.linux.dev>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux Memory Management List <linux-mm@...ck.org>,
        Xiongchun duan <duanxiongchun@...edance.com>,
        Muchun Song <smuchun@...il.com>,
        Shiyang Ruan <ruansy.fnst@...itsu.com>
Subject: Re: [PATCH v6 3/6] mm: rmap: introduce pfn_mkclean_range() to cleans PTEs

On Wed, Mar 30, 2022 at 1:47 PM Christoph Hellwig <hch@...radead.org> wrote:
>
> On Tue, Mar 29, 2022 at 09:48:50PM +0800, Muchun Song wrote:
> > + * * Return the start of user virtual address at the specific offset within
>
> Double "*" here.

Thanks for pointing out this.

>
> Also Shiyang has been wanting a quite similar vma_pgoff_address for use
> in dax.c.  Maybe we'll need to look into moving this to linux/mm.h.
>

I saw Shiyang is ready to rebase onto this patch.  So should I
move it to linux/mm.h or let Shiyang does?

Thanks.