K 10
svn:author
V 8
rmacklem
K 8
svn:date
V 27
2017-04-24T20:46:19.368114Z
K 7
svn:log
V 536
Allow use of a write open stateid for reading in the NFSv4 server.

The NFSv4 RFCs give a server the option of allowing the use of an open
stateid for write access to be used for a Read operation.
This patch enables this by default and adds a sysctl to disable it,
for anyone who does not want this capability.
Allowing this is particularily useful for a pNFS Data Server (DS), since
they are not permitted to allow the use of special stateids.
Discovered during recent testing of the pNFS server under development.

MFC after:	2 weeks

END