Re: [PATCH v8 14/25] mm: Document why we don't set PageReadahead

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To: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Subject: Re: [PATCH v8 14/25] mm: Document why we don't set PageReadahead
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Wed, 26 Feb 2020 09:03:59 -0800
Cc: linux-fsdevel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-btrfs@xxxxxxxxxxxxxxx, linux-erofs@xxxxxxxxxxxxxxxx, linux-ext4@xxxxxxxxxxxxxxx, linux-f2fs-devel@xxxxxxxxxxxxxxxxxxxxx, cluster-devel@xxxxxxxxxx, ocfs2-devel@xxxxxxxxxxxxxx, linux-xfs@xxxxxxxxxxxxxxx
In-reply-to: <20200225214838.30017-15-willy@infradead.org>
References: <20200225214838.30017-1-willy@infradead.org> <20200225214838.30017-15-willy@infradead.org>

On Tue, Feb 25, 2020 at 01:48:27PM -0800, Matthew Wilcox wrote:
> From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
> 
> If the page is already in cache, we don't set PageReadahead on it.
> 
> Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>

Looks good,

Reviewed-by: Christoph Hellwig <hch@xxxxxx>

References:
- [PATCH v8 00/25] Change readahead API
  - From: Matthew Wilcox
- [PATCH v8 14/25] mm: Document why we don't set PageReadahead
  - From: Matthew Wilcox

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