linux-kernel - Re: xfs: commit 6552321831dc "xfs: remove i_iolock and use i_rwsem in the VFS inode instead" change causes hang

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Date:   Sun, 8 Jan 2017 17:43:21 +0100
From:   Christoph Hellwig <hch@....de>
To:     Mimi Zohar <zohar@...ux.vnet.ibm.com>
Cc:     Christoph Hellwig <hch@....de>, linux-xfs@...r.kernel.org,
        Dave Chinner <david@...morbit.com>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Al Viro <viro@...IV.linux.org.uk>,
        James Morris <jmorris@...ei.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        David Safford <david.safford@...com>
Subject: Re: xfs:  commit 6552321831dc "xfs: remove i_iolock and use
        i_rwsem in the VFS inode instead"  change causes hang

On Sun, Jan 08, 2017 at 11:38:26AM -0500, Mimi Zohar wrote:
> We definitely need VFS help in resolving this regression.  As a last
> resort, we could always update the default IMA builtin policy to exclude
> XFS.

No, you need to explicitly white list file system that are supported,
and most importantly actually tested using an automated tesuite.