nfsd: add a "GetVersion" upcall for nfsdcld

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Add a "GetVersion" upcall to allow nfsd to determine the maximum upcall
version that the nfsdcld userspace daemon supports.  If the daemon
responds with -EOPNOTSUPP, then we know it only supports v1.

Signed-off-by: Scott Mayhew <smayhew@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

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Scott Mayhew 2019-09-09 16:10:30 -04:00 • committed by J. Bruce Fields

parent bbf2f09883

commit 11a60d1592

2 changed files with 127 additions and 51 deletions

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167

fs/nfsd/nfs4recover.c

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11

include/uapi/linux/nfsd/cld.h

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