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Date: Thu, 22 Jan 2015 18:03:39 +0800
From: Anand Jain <Anand.Jain@oracle.com>
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To: linux-btrfs <linux-btrfs@vger.kernel.org>
Subject: replace seed/sprout hangs  (regression ?)
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  The following test case hangs as of now, but as I remember Fujitsu
  had sent a patch to fix this, a long time back. Can't find now,
  any idea. ?

  Test case:
    add a spout device
    replace seed / sprout device

  hangs at:
   (btrfs_reada_wait+0x4d/0xb0)

Thanks, Anand