linux-kernel - Re: [PATCH 27/32] NFS: Refactor nfs_readpage() and nfs_readpage_async() to use nfs

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Date:   Tue, 26 Jan 2021 10:24:55 -0500
From:   David Wysochanski <dwysocha@...hat.com>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     David Howells <dhowells@...hat.com>,
        Trond Myklebust <trondmy@...merspace.com>,
        Anna Schumaker <anna.schumaker@...app.com>,
        Steve French <sfrench@...ba.org>,
        Dominique Martinet <asmadeus@...ewreck.org>,
        Jeff Layton <jlayton@...hat.com>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        linux-cachefs@...hat.com, linux-afs@...ts.infradead.org,
        linux-nfs <linux-nfs@...r.kernel.org>,
        linux-cifs <linux-cifs@...r.kernel.org>,
        ceph-devel@...r.kernel.org, v9fs-developer@...ts.sourceforge.net,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 27/32] NFS: Refactor nfs_readpage() and
 nfs_readpage_async() to use nfs_readdesc

On Mon, Jan 25, 2021 at 11:06 PM Matthew Wilcox <willy@...radead.org> wrote:
>
> On Mon, Jan 25, 2021 at 09:36:13PM +0000, David Howells wrote:
> > +int nfs_readpage_async(void *data, struct inode *inode,
> >                      struct page *page)
> >  {
> > +     struct nfs_readdesc *desc = (struct nfs_readdesc *)data;
>
> You don't need a cast to cast from void.
>
Right, fixing.

> > @@ -440,17 +439,16 @@ int nfs_readpages(struct file *filp, struct address_space *mapping,
> >       if (ret == 0)
> >               goto read_complete; /* all pages were read */
> >
> > -     desc.pgio = &pgio;
> > -     nfs_pageio_init_read(&pgio, inode, false,
> > +     nfs_pageio_init_read(&desc.pgio, inode, false,
>
> I like what you've done here, embedding the pgio in the desc.
>
Thanks for the review!