NFSv4.1: Delay callback processing when there are referring triples
authorTrond Myklebust <trond.myklebust@primarydata.com>
Sun, 28 Aug 2016 17:25:43 +0000 (13:25 -0400)
committerTrond Myklebust <trond.myklebust@primarydata.com>
Sun, 28 Aug 2016 18:23:26 +0000 (14:23 -0400)
commit045d2a6d076a2ecd7043ea543ea198af943f8b16
tree19a7f27abb8e531c90b5de29619184d219a9d329
parente09c978aae5bedfdb379be80363b024b7d82638b
NFSv4.1: Delay callback processing when there are referring triples

If CB_SEQUENCE tells us that the processing of this request depends on
the completion of one or more referring triples (see RFC 5661 Section
2.10.6.3), delay the callback processing until after the RPC requests
being referred to have completed.
If we end up delaying for more than 1/2 second, then fall back to
returning NFS4ERR_DELAY in reply to the callback.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
fs/nfs/callback_proc.c
fs/nfs/nfs4proc.c
fs/nfs/nfs4session.c
fs/nfs/nfs4session.h