linux-kernel - RE: [External] Re: [PATCH 3/3] fs/dax: Assigning NULL to gfn of dax_direct

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Date:   Wed, 4 Jul 2018 15:35:44 +0000
From:   Huaisheng HS1 Ye <yehs1@...ovo.com>
To:     Dan Williams <dan.j.williams@...el.com>
CC:     Jan Kara <jack@...e.cz>, linux-nvdimm <linux-nvdimm@...ts.01.org>,
        "Ross Zwisler" <ross.zwisler@...ux.intel.com>,
        Matthew Wilcox <mawilcox@...rosoft.com>,
        Vishal L Verma <vishal.l.verma@...el.com>,
        "Dave Jiang" <dave.jiang@...el.com>,
        Martin Schwidefsky <schwidefsky@...ibm.com>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        Al Viro <viro@...iv.linux.org.uk>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Jens Axboe <axboe@...nel.dk>,
        Greg KH <gregkh@...uxfoundation.org>,
        "Bart Van Assche" <bart.vanassche@....com>,
        Jan Kara <jack@...e.com>, NingTing Cheng <chengnt@...ovo.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-s390 <linux-s390@...r.kernel.org>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        colyli <colyli@...e.de>, Huaisheng Ye <yehs2007@...o.com>
Subject: RE: [External]  Re: [PATCH 3/3] fs/dax: Assigning NULL to gfn of
 dax_direct_access if useless

From: Dan Williams [mailto:dan.j.williams@...el.com]
Sent: Wednesday, July 04, 2018 10:42 PM
> 
> On Wed, Jul 4, 2018 at 7:37 AM, Dan Williams <dan.j.williams@...el.com> wrote:
> > On Wed, Jul 4, 2018 at 6:07 AM, Huaisheng Ye <yehs2007@...o.com> wrote:
> >>  ---- On Wed, 04 Jul 2018 19:30:12 +0800 Jan Kara <jack@...e.cz> wrote ----
> >>  > On Wed 04-07-18 14:40:58, Huaisheng Ye wrote:
> >>  > > From: Huaisheng Ye <yehs1@...ovo.com>
> >>  > >
> >>  > > Some functions within fs/dax don't need to get gfn from direct_access.
> >>  > > Assigning NULL to gfn of dax_direct_access is more intuitive and simple
> >>  > > than offering a useless local variable.
> >>  > >
> >>  > > Signed-off-by: Huaisheng Ye <yehs1@...ovo.com>
> >>  >
> >>  > I like this. You can add:
> >>  >
> >>  > Reviewed-by: Jan Kara <jack@...e.cz>
> >>  >
> >>  > for the series.
> >>  >
> >>  >                                 Honza
> >>  >
> >> I am so happy you like them, thank you very much.
> >
> > Yes, I like this too. In fact I have a similar patch in my tree
> > already that I have been preparing to send out. I am using it to delay
> > when we need to have the 'struct page' memmap for dax initialized.
> > Attached is the full patch, but the series is still a work in
> > progress.
> 
> Btw, I'll drop my version and apply your series since you got it
> posted first and it can stand alone as its own cleanup.

Hi Dan,

I will resend the series later, and thanks for your help.

Cheers,
Huaisheng Ye