linux-kernel - Re: [PATCH v3 4/6] folio: Add a function to get the host inode for a folio

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Date:   Wed, 3 Nov 2021 13:16:00 +0000
From:   Matthew Wilcox <willy@...radead.org>
To:     David Howells <dhowells@...hat.com>
Cc:     Jeff Layton <jlayton@...nel.org>,
        Ilya Dryomov <idryomov@...il.com>,
        Dominique Martinet <asmadeus@...ewreck.org>,
        linux-fsdevel@...r.kernel.org, linux-cachefs@...hat.com,
        v9fs-developer@...ts.sourceforge.net,
        linux-afs@...ts.infradead.org, linux-nfs@...r.kernel.org,
        linux-cifs@...r.kernel.org, ceph-devel@...r.kernel.org,
        devel@...ts.orangefs.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 4/6] folio: Add a function to get the host inode for a
 folio

On Tue, Nov 02, 2021 at 08:30:46AM +0000, David Howells wrote:
> Add a convenience function, folio_inode() that will get the host inode from
> a folio's mapping.

I'm not opposed, but it only saves two characters, so I'm not entirely
sure it justifies its existance.  On the other hand, folio_inode() is
clear about what it does.

> + * For folios which are in the page cache, return the inode that is hosting
> + * this folio belongs to.

This looks like an editing mistake.  Either you meant
'return the inode that hosts this folio' or
'return the inode this folio belongs to'
(and i prefer the second).

With that grammo fixed,

Reviewed-by: Matthew Wilcox (Oracle) <willy@...radead.org>