From 0d0ab120d1fe90fcc73a2bfff3945bea636b3025 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Thu, 15 Aug 2013 08:53:38 +0300
Subject: [PATCH] xfs: check for underflow in xfs_iformat_fork()

The "di_size" variable comes from the disk and it's a signed 64 bit.
We check the upper limit but we should check for negative numbers as
well.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
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Reading git-format-patch failed