From 992c5ddaf1b8b85d2252339c4c89adf7469c09ca Mon Sep 17 00:00:00 2001
From: Jens Axboe <jens.axboe@oracle.com>
Date: Wed, 18 Jul 2007 13:18:08 +0200
Subject: [PATCH] bio: make freeing of ->bi_io_vec conditional in bio_free()

The empty barrier patches do not carry data, so they have no
iovec attached.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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Reading git-format-patch failed