From 487696957e3bd64ccffe62c0ac4ff7bf662785ab Mon Sep 17 00:00:00 2001
From: Shaohua Li <shli@kernel.org>
Date: Wed, 13 May 2015 09:30:08 -0700
Subject: [PATCH] raid5: fix broken async operation chain

ops_run_reconstruct6() doesn't correctly chain asyn operations. The tx returned
by async_gen_syndrome should be added as the dependent tx of next stripe.

The issue is introduced by commit 59fc630b8b5f9f21c8ce3ba153341c107dce1b0c
    RAID5: batch adjacent full stripe write

Reported-and-tested-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: NeilBrown <neilb@suse.de>
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