linux-kernel - Re: [PATCH v7 14/24] btrfs: Convert from readpages to readahead

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Message-ID: <SN4PR0401MB35987D7B76007B93B1C5CE5E9B130@SN4PR0401MB3598.namprd04.prod.outlook.com>
Date:   Thu, 20 Feb 2020 09:42:19 +0000
From:   Johannes Thumshirn <Johannes.Thumshirn@....com>
To:     Matthew Wilcox <willy@...radead.org>,
        "linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>
CC:     "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-btrfs@...r.kernel.org" <linux-btrfs@...r.kernel.org>,
        "linux-erofs@...ts.ozlabs.org" <linux-erofs@...ts.ozlabs.org>,
        "linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>,
        "linux-f2fs-devel@...ts.sourceforge.net" 
        <linux-f2fs-devel@...ts.sourceforge.net>,
        "cluster-devel@...hat.com" <cluster-devel@...hat.com>,
        "ocfs2-devel@....oracle.com" <ocfs2-devel@....oracle.com>,
        "linux-xfs@...r.kernel.org" <linux-xfs@...r.kernel.org>
Subject: Re: [PATCH v7 14/24] btrfs: Convert from readpages to readahead

On 19/02/2020 22:03, Matthew Wilcox wrote:
> From: "Matthew Wilcox (Oracle)" <willy@...radead.org>
> 
> Use the new readahead operation in btrfs.  Add a
> readahead_for_each_batch() iterator to optimise the loop in the XArray.


OK I must admit I haven't followed this series closely, but what 
happened to said readahead_for_each_batch()?

As far as I can see it's now:

[...]
> +	while ((nr = readahead_page_batch(rac, pagepool))) {