From 582987098207f1182ed5c7d01d5fedf7a5f56286 Mon Sep 17 00:00:00 2001
From: Lukas Czerner <lczerner@redhat.com>
Date: Wed, 27 Oct 2010 21:30:03 -0400
Subject: [PATCH] ext4: check for negative error code from sb_issue_discard

sb_issue_discard() is returning negative error code, so check for
-EOPNOTSUPP.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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Reading git-format-patch failed