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path: root/fs/nfs/nfs4session.h
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2012-12-15NFSv4.1: Deal effectively with interrupted RPC calls.Trond Myklebust
If an RPC call is interrupted, assume that the server hasn't processed the RPC call so that the next time we use the slot, we know that if we get a NFS4ERR_SEQ_MISORDERED or NFS4ERR_SEQ_FALSE_RETRY, we just have to bump the sequence number. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-12-15NFSv4.1: Move the RPC timestamp out of the slot.Trond Myklebust
Shave a few bytes off the slot table size by moving the RPC timestamp into the sequence results. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-12-05NFSv4.1: Try to eliminate outliers when updating target_highest_slotidTrond Myklebust
Look for sudden changes in the first and second derivatives in order to eliminate outlier changes to target_highest_slotid (which are due to out-of-order RPC replies). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-12-05NFSv4.1: Ensure smooth handover of slots from one task to the next waitingTrond Myklebust
Currently, we see a lot of bouncing for the value of highest_used_slotid due to the fact that slots are getting freed, instead of getting instantly transmitted to the next waiting task. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-12-05NFSv4.1: Set the maximum slot table size to 1024 slotsTrond Myklebust
This means that we end up statically allocating 128 bytes for the bitmap on each slot table. For a server that supports 1MB write and read I/O sizes this means that we can completely fill the maximum 1GB TCP send/receive windows. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-12-05NFSv4.1: Move slot table and session struct definitions to nfs4session.hTrond Myklebust
Clean up. Gather NFSv4.1 slot definitions in fs/nfs/nfs4session.h. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-12-05NFSv4.1: Cleanup move session slot management to fs/nfs/nfs4session.cTrond Myklebust
NFSv4.1 session management is getting complex enough to deserve a separate file. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>