linux-kernel - Re: [PATCH 2/2] NFS: rename nfs_direct_IO and use as ->swap

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Message-id: <165119791620.1648.7397114175780668923@noble.neil.brown.name>
Date:   Fri, 29 Apr 2022 12:05:16 +1000
From:   "NeilBrown" <neilb@...e.de>
To:     "Andrew Morton" <akpm@...ux-foundation.org>
Cc:     "Geert Uytterhoeven" <geert+renesas@...der.be>,
        "Christoph Hellwig" <hch@....de>,
        "Miaohe Lin" <linmiaohe@...wei.com>, linux-nfs@...r.kernel.org,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] NFS: rename nfs_direct_IO and use as ->swap_rw

On Fri, 29 Apr 2022, Andrew Morton wrote:
> On Fri, 29 Apr 2022 10:43:34 +1000 NeilBrown <neilb@...e.de> wrote:
> 
> > The nfs_direct_IO() exists to support SWAP IO, but hasn't worked for a
> > while.  We now need a ->swap_rw function which behaves slightly
> > differently, returning zero for success rather than a byte count.
> > 
> > So modify nfs_direct_IO accordingly, rename it, and use it as the
> > ->swap_rw function.
> > 
> 
> This one I insertion sorted into the series after
> mm-introduce-swap_rw-and-use-it-for-reads-from-swp_fs_ops-swap-space.patch.
> I can later fold this patch into that one of you think that's a better
> presentation?
> 

I'm happy for the patches to remain separate - though adjacent is good.
If they were to be merged we'd need to fix up the commit message.
At least delete:

   Future patches will restore swap-over-NFS functionality.

Thanks,
NeilBrown