linux-kernel - Re: [PATCH v15 05/17] overlayfs: Implement splice-read

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Message-ID: <Y+z/85HqpEceq66f@casper.infradead.org>
Date:   Wed, 15 Feb 2023 15:53:23 +0000
From:   Matthew Wilcox <willy@...radead.org>
To:     Miklos Szeredi <miklos@...redi.hu>
Cc:     David Howells <dhowells@...hat.com>, Jens Axboe <axboe@...nel.dk>,
        Al Viro <viro@...iv.linux.org.uk>,
        Christoph Hellwig <hch@...radead.org>, Jan Kara <jack@...e.cz>,
        Jeff Layton <jlayton@...nel.org>,
        David Hildenbrand <david@...hat.com>,
        Jason Gunthorpe <jgg@...dia.com>,
        Logan Gunthorpe <logang@...tatee.com>,
        Hillf Danton <hdanton@...a.com>, linux-fsdevel@...r.kernel.org,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, Christoph Hellwig <hch@....de>,
        John Hubbard <jhubbard@...dia.com>,
        linux-unionfs@...r.kernel.org
Subject: Re: [PATCH v15 05/17] overlayfs: Implement splice-read

On Wed, Feb 15, 2023 at 04:50:04PM +0100, Miklos Szeredi wrote:
> Looks good.  One more suggestion: add a vfs_splice() helper and use
> that from do_splice_to() as well.

I really hate call_read_iter() etc.  Please don't perpetuate that
pattern.