xfs: fix endian conversion issue in discard code
authorDave Chinner <dchinner@redhat.com>
Wed, 21 Dec 2011 00:07:42 +0000 (00:07 +0000)
committerBen Myers <bpm@sgi.com>
Tue, 3 Jan 2012 17:39:55 +0000 (11:39 -0600)
commitb1c770c273a4787069306fc82aab245e9ac72e9d
tree64337e4ec57722c40a4a9733ab046d5ece2a65f2
parent40d344ec5ee440596b1f3ae87556e20c7197757a
xfs: fix endian conversion issue in discard code

When finding the longest extent in an AG, we read the value directly
out of the AGF buffer without endian conversion. This will give an
incorrect length, resulting in FITRIM operations potentially not
trimming everything that it should.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ben Myers <bpm@sgi.com>
fs/xfs/xfs_discard.c