linux-ext4 - Re: More ext4 acl/xattr corruption

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Date:	Tue, 19 May 2009 17:18:06 +0200
From:	Thierry Vignaud <tvignaud@...driva.com>
To:	Theodore Tso <tytso@....edu>
Cc:	Alex Tomas <bzzz@....com>, Kevin Shanahan <kmshanah@...b.org.au>,
	Andreas Dilger <adilger@....com>, linux-ext4@...r.kernel.org
Subject: Re: More ext4 acl/xattr corruption - 4th occurence now

Theodore Tso <tytso@....edu> writes:

> >> On the other hand, most of the time writes into the directory will
> >> tend to be into pre-existing free space; but if you had two parallel
> >> cp's copying a large number of files into the same directory, that
> >> could certainly happen.
> >
> > isn't access to a directory protected with i_mutex ?
> 
> Hmm, good point.  Yes, that should prevent problems with directories.
> So there should only be a problem when two processes are writing to
> the same file at the same time.

I remember that happened...
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