linux-kernel - Re: [PATCH 09/11] splice: use get_page_for

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Message-ID: <20160927034515.GI19539@ZenIV.linux.org.uk>
Date:   Tue, 27 Sep 2016 04:45:15 +0100
From:   Al Viro <viro@...IV.linux.org.uk>
To:     Miklos Szeredi <mszeredi@...hat.com>
Cc:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 09/11] splice: use get_page_for_read()

On Wed, Sep 14, 2016 at 10:37:14AM +0200, Miklos Szeredi wrote:
> What __generic_file_splice_read() does is get a series of uptodate pages
> and put them into the pipe buffer.
> 
> The get_page_for_read() helper can now be used to get the pages,
> simplifying the code and making sure the splice(2) stays in sync with
> read(2).
> 
> For example get_page_for_read() can handle partially uptodate pages and now
> splice can take advantage of these as well.

... or, better yet, kill __generic_file_splice_read() off.