tree 2254226f1fcaf7bacab43909e8a62374fb49f512
parent 9faa2ade3fdaf00c6c45654071b325d3c88f9230
author Vitaly Fertman <vitaly.fertman@seagate.com> 1466456132 -0400
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1466458119 -0700

staging/lustre/ptlrpc: Early Reply vs Reply MDunlink

A race between unregister_reply & early reply.
When buffers are busy for the early transfer, they cannon be unlinked
by unregister_reply, so the RPC gets into UNREGISTERING state. The
coming reply_in_callback for the early RPC already has unlinked flag
set due to previous mdunlink attempt, but we handle it properly only
for UNILNK event, whereas this is PUT in this case.

Signed-off-by: Vitaly Fertman <vitaly.fertman@seagate.com>
Seagate-bug-id: MRP-3323
Reviewed-by: Alexey Leonidovich Lyashkov <alexey.lyashkov@seagate.com>
Reviewed-by: Andriy Skulysh <andriy.skulysh@seagate.com>
Tested-by: Parinay Vijayprakash Kondekar <parinay.kondekar@seagate.com>
Reviewed-on: http://review.whamcloud.com/18934
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-7434
Reviewed-by: Chris Horn <hornc@cray.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>