[vserver] Fwd: Re: 3.2.9 and locking problem

From: Arkadiusz Miśkiewicz <arekm_at_maven.pl>
Date: Mon 12 Mar 2012 - 16:21:21 GMT
Message-Id: <201203121721.21887.arekm@maven.pl>


vserver patch introduces a bug in xfs handling in 3.2 kernels. It causes hangs
like http://oss.sgi.com/pipermail/xfs/2012-March/017685.html

Here is info on how to fix it:

---------- Forwarded Message ----------

Subject: Re: 3.2.9 and locking problem
Date: Monday 12 of March 2012
From: Christoph Hellwig <hch@infradead.org>
To: "Arkadiusz Mi??kiewicz" <arekm@maven.pl>

In the 3.2 version xfs_sync_flags does a double unlock of the ilock -
change the last argument of xfs_trans_ijoin from XFS_ILOCK_EXCL to 0
will fix this. The 3.0 version doesn't have this bug.

And btw, the additions to the on-disk format are gross - this stuff
broke before and will break again when we add new features.


Arkadiusz Miśkiewicz        PLD/Linux Team
arekm / maven.pl            http://ftp.pld-linux.org/
Received on Mon Mar 12 16:21:38 2012
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