linux-kernel - Re: [PATCH v3] fs: dax: Adding new return type vm_fault

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Date:   Mon, 23 Apr 2018 10:28:40 -0700
From:   Matthew Wilcox <willy@...radead.org>
To:     Souptick Joarder <jrdr.linux@...il.com>
Cc:     Jan Kara <jack@...e.cz>, Al Viro <viro@...iv.linux.org.uk>,
        mawilcox@...rosoft.com,
        Ross Zwisler <ross.zwisler@...ux.intel.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Dan Williams <dan.j.williams@...el.com>,
        Michal Hocko <mhocko@...e.com>,
        kirill.shutemov@...ux.intel.com,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        Linux-MM <linux-mm@...ck.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] fs: dax: Adding new return type vm_fault_t

On Mon, Apr 23, 2018 at 09:42:30PM +0530, Souptick Joarder wrote:
> > OK, fair enough and thanks for doing an audit! So possibly just add a
> > comment above vmf_insert_mixed() and vmf_insert_mixed_mkwrite() like:
> >
> > /*
> >  * If the insertion of PTE failed because someone else already added a
> >  * different entry in the mean time, we treat that as success as we assume
> >  * the same entry was actually inserted.
> >  */
> >
> > After that feel free to add:
> >
> > Reviewed-by: Jan Kara <jack@...e.cz>
> >
> > to the patch.
> >
> 
> Thanks , will add this in change log and send v4.

Jan asked you to add this comment above vmf_insert_mixed_mkwrite()
(I don't think it needs to be added above vmf_insert_mixed() because
this comment will get moved in a later commit once we have no more callers
of vm_insert_mixed()).