[PATCH] security/ima: use fs method to read integrity data

[James Morris]

On Wed, 10 May 2017, Christoph Hellwig wrote:

> Add a new ->integrity_read file operation to read data for
> integrity hash collection.  This is defined to be equivalent
> to ->read_iter, except that it will be called with the i_rwsem
> held exclusively.  Also the presence of ->integrity_read indicates
> that the file system can support IMA.
> 
> Signed-off-by: Christoph Hellwig <hch at lst.de>

Fixes an IMA+XFS deadlock I've been seeing.

Tested-by: James Morris <james.l.morris at oracle.com>


-- 
James Morris
<jmorris at namei.org>

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