linux-kernel - Re: [PATCH v5 3/6] libnvdimm: add dax

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Date:   Wed, 10 Apr 2019 10:28:04 +0200
From:   Jan Kara <jack@...e.cz>
To:     Pankaj Gupta <pagupta@...hat.com>
Cc:     linux-nvdimm@...ts.01.org, linux-kernel@...r.kernel.org,
        virtualization@...ts.linux-foundation.org, kvm@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-acpi@...r.kernel.org,
        qemu-devel@...gnu.org, linux-ext4@...r.kernel.org,
        linux-xfs@...r.kernel.org, dan.j.williams@...el.com,
        zwisler@...nel.org, vishal.l.verma@...el.com, dave.jiang@...el.com,
        mst@...hat.com, jasowang@...hat.com, willy@...radead.org,
        rjw@...ysocki.net, hch@...radead.org, lenb@...nel.org,
        jack@...e.cz, tytso@....edu, adilger.kernel@...ger.ca,
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        xiaoguangrong.eric@...il.com, pbonzini@...hat.com,
        kilobyte@...band.pl, yuval.shaia@...cle.com
Subject: Re: [PATCH v5 3/6] libnvdimm: add dax_dev sync flag

On Wed 10-04-19 09:38:23, Pankaj Gupta wrote:
> @@ -64,6 +65,10 @@ static inline bool dax_write_cache_enabled(struct dax_device *dax_dev)
>  {
>  	return false;
>  }
> +static inline bool dax_synchronous(struct dax_device *dax_dev)
> +{
> +	return true;
> +}

Is there a need to define dax_synchronous() for !CONFIG_DAX? Because that
property of dax device is pretty much undefined and I don't see anything
needing to call it for !CONFIG_DAX...

								Honza
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR