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NFSD support for multiple backchannel session slots #38

Open chucklever opened 7 months ago

chucklever commented 7 months ago

Currently NFSD (and the Linux NFS client) have but a single backchannel session slot. This serializes backchannel all operation to each client. Normally there isn't a lot of traffic on the backchannel, so increasing the backchannel slot count hasn't been a priority.

A to-do comment in fs/nfsd/nfs4callback.c mentions that NFSD should support multiple session slots.

chucklever commented 6 months ago

It's not clear which clients might support multiple backchannel session slots, nor whether there is enough traffic on the backchannel to warrant more slots.