linux-kernel - Re: [PATCH v2 0/4] Assigning NULL to gfn of dax_direct

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Date:   Wed, 4 Jul 2018 09:48:40 -0700
From:   Dan Williams <dan.j.williams@...el.com>
To:     Huaisheng Ye <yehs2007@...o.com>
Cc:     linux-nvdimm <linux-nvdimm@...ts.01.org>,
        Ross Zwisler <ross.zwisler@...ux.intel.com>,
        Matthew Wilcox <willy@...radead.org>,
        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>,
        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>, NingTing Cheng <chengnt@...ovo.com>,
        Huaisheng Ye <yehs1@...ovo.com>
Subject: Re: [PATCH v2 0/4] Assigning NULL to gfn of dax_direct_access if useless

On Wed, Jul 4, 2018 at 9:38 AM, Huaisheng Ye <yehs2007@...o.com> wrote:
> From: Huaisheng Ye <yehs1@...ovo.com>
>
> Changes since v1 [1]:
> * Collect Jan's reviewed-by.
> * According to Dan's suggestion, update the unit test infrastructure
>   tools/testing/nvdimm/pmem-dax.c for checking the validity of gfn.
>
> [1]: https://lkml.org/lkml/2018/7/4/81
>
> ---
>
> Some functions within fs/dax don't need to get gfn from direct_access.

Any reason you are calling it 'gfn'? I'm assuming that is a typo and
it should be 'pfn'.