linux-kernel - Re: [PATCH resend] introduce I

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Message-ID: <20070601120008.GB30328@lazybastard.org>
Date:	Fri, 1 Jun 2007 14:00:08 +0200
From:	Jörn Engel <joern@...ybastard.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	Dave Kleikamp <shaggy@...ux.vnet.ibm.com>,
	David Chinner <dgc@....com>,
	Anton Altaparmakov <aia21@....ac.uk>,
	Al Viro <viro@....linux.org.uk>,
	Christoph Hellwig <hch@...radead.org>
Subject: Re: [PATCH resend] introduce I_SYNC

On Thu, 31 May 2007 15:46:48 -0700, Andrew Morton wrote:
> > 
> > I_LOCK was used for several unrelated purposes, which caused deadlock
> > situations in certain filesystems as a side effect.  One of the purposes
> > now uses the new I_SYNC bit.
> 
> Do we know what those deadlocks were?  It's a bit of a mystery patch otherwise.
> 
> Put yourself in the position of random-distro-engineer wondering "should I
> backport this?".

The logfs deadlock is well-known.  All others are very handwavy and may
or may not really exist.

Will resend with description and without the jfs comment.

> > Also document the various bits and change their order from historical to
> > logical.
> 
> What a nice comment you added ;)

And now I know how to bribe you into accepting patches. ;)

Jörn

-- 
Unless something dramatically changes, by 2015 we'll be largely
wondering what all the fuss surrounding Linux was really about.
-- Rob Enderle
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