Trond Myklebust e71708d4df pNFS: Return RW layouts on OPEN_DOWNGRADE ...

If the client holds no more writeable open state, and does not hold a
write delegation, then send a layoutreturn as part of the OPEN_DOWNGRADE.

We do this only for writes, since some layout drivers may require you to
also hold a read layout if you are doing a R/W workload.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

2016-12-19 17:29:55 -05:00

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