linux-ext4 - Re: [PATCH] readahead.2: don't claim the call blocks until all data has been read

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Date:	Sat, 15 Mar 2014 02:24:55 -0700
From:	Christoph Hellwig <hch@...radead.org>
To:	"Michael Kerrisk (man-pages)" <mtk.manpages@...il.com>
Cc:	Phillip Susi <psusi@...ntu.com>, linux-man@...r.kernel.org,
	linux-mm@...ck.org, linux-ext4@...r.kernel.org,
	Corrado Zoccolo <czoccolo@...il.com>,
	"Gregory P. Smith" <gps@...gle.com>,
	Zhu Yanhai <zhu.yanhai@...il.com>
Subject: Re: [PATCH] readahead.2: don't claim the call blocks until all data
 has been read

On Sat, Mar 15, 2014 at 10:05:14AM +0100, Michael Kerrisk (man-pages) wrote:
>        However, it may block while  it  reads
>        the  filesystem metadata needed to locate the requested blocks.
>        This occurs frequently with ext[234] on large files using indi???
>        rect  blocks instead of extents, giving the appearence that the
>        call blocks until the requested data has been read.
> 
> Okay?

The part above is something that should be in the BUGS section.

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