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path: root/fs/nfs/nfs4session.h
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* NFSv4.1: Deal effectively with interrupted RPC calls.Trond Myklebust2012-12-151-0/+1
| | | | | | | | | 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>
* NFSv4.1: Move the RPC timestamp out of the slot.Trond Myklebust2012-12-151-1/+0
| | | | | | | 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>
* NFSv4.1: Try to eliminate outliers when updating target_highest_slotidTrond Myklebust2012-12-061-0/+2
| | | | | | | | 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>
* NFSv4.1: Ensure smooth handover of slots from one task to the next waitingTrond Myklebust2012-12-061-0/+4
| | | | | | | | 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>
* NFSv4.1: Set the maximum slot table size to 1024 slotsTrond Myklebust2012-12-061-1/+1
| | | | | | | | | | 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>
* NFSv4.1: Move slot table and session struct definitions to nfs4session.hTrond Myklebust2012-12-061-0/+101
| | | | | | Clean up. Gather NFSv4.1 slot definitions in fs/nfs/nfs4session.h. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4.1: Cleanup move session slot management to fs/nfs/nfs4session.cTrond Myklebust2012-12-061-0/+35
NFSv4.1 session management is getting complex enough to deserve a separate file. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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