linux-ext4 - Re: [PATCH 09/13] dax: Allow dax_iomap

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Message-ID: <20170824072654.GD20465@quack2.suse.cz>
Date:   Thu, 24 Aug 2017 09:26:54 +0200
From:   Jan Kara <jack@...e.cz>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     Jan Kara <jack@...e.cz>, linux-fsdevel@...r.kernel.org,
        Boaz Harrosh <boazh@...app.com>, linux-nvdimm@...ts.01.org,
        linux-xfs@...r.kernel.org, Andy Lutomirski <luto@...nel.org>,
        linux-ext4@...r.kernel.org
Subject: Re: [PATCH 09/13] dax: Allow dax_iomap_fault() to return pfn

On Wed 23-08-17 11:34:00, Christoph Hellwig wrote:
> > @@ -1416,6 +1416,7 @@ static int dax_iomap_pmd_fault(struct vm_fault *vmf,
> >   * @vmf: The description of the fault
> >   * @pe_size: Size of the page to fault in
> >   * @ops: Iomap ops passed from the file system
> > + * @pfnp: PFN to insert for synchronous faults if fsync is required
> >   *
> >   * When a page fault occurs, filesystems may call this helper in
> >   * their fault handler for DAX files. dax_iomap_fault() assumes the caller
> > @@ -1423,13 +1424,13 @@ static int dax_iomap_pmd_fault(struct vm_fault *vmf,
> >   * successfully.
> >   */
> >  int dax_iomap_fault(struct vm_fault *vmf, enum page_entry_size pe_size,
> > -		    const struct iomap_ops *ops)
> > +		    const struct iomap_ops *ops, pfn_t *pfnp)
> 
> Please keep the iomap_ops argument the last one for the exported
> function (and probably all others for consistency).

Hum, I wanted the output argument to be the last one. But I don't care
much. Swapped.

> Otherwise looks good:
> 
> Reviewed-by: Christoph Hellwig <hch@....de>

Thanks!

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