RFC nfs41 server patches for review

Bruce,

Here's the patch series for nfs41 server side, rebased over 2.6.28 for review.

I've cleaned up the patch as much as I could in the given time frame but surely there's more work to be done.

I encourage others to comment on the patches as well.

Note that the following patch in the client sie patchset:
[RFC 06/85] nfs41: common protocol definitions
contains common code and is needed for the server side to compile and run.

Thanks,

Benny

pre-nfs41 misc. patches:
[RFC 01/51] nfsd: add etoosmall to nfserrno
[RFC 02/51] nfsd: dprint each op status in nfsd4_proc_compound [RFC 03/51] nfsd: git rid of nfs4_cb_null_ops declaration [RFC 04/51] nfsd: fix file comment in fs/nfsd/nfs4xdr.c

basic sessions support:
[RFC 05/51] nfsd41: Add Kconfig symbols for NFSv4.1 [RFC 06/51] nfsd41: define nfs41 error codes
[RFC 07/51] nfsd41: sessions basic data types
[RFC 08/51] nfsd41: introduce nfs4_client cl_sessions list [RFC 09/51] nfsd41: destroy_session when client is expired [RFC 10/51] nfsd41: sessionid hashing
[RFC 11/51] FIXME: nfsd41: reduce server lease time for nfs41

minorversion 1 support:
[RFC 12/51] nfsd41: provide support for minor version 1 at rpc level [RFC 13/51] FIXME: nfsd41: introduce current_session
[RFC 14/51] nfsd41: introduce nfs41_{get,set}_slot_state [RFC 15/51] FIXME: nfsd41: free up slot unless operation is dropped [RFC 16/51] nfsd41: stateid handling
[RFC 17/51] nfsd41: clientid handling
[RFC 18/51] nfsd41: access_valid
[RFC 19/51] nfsd41: add OPEN4_SHARE_ACCESS_WANT nfs4_stateid bmap [RFC 20/51] nfsd: last_byte_offset
[Hmm, this one actually belongs in the pre-nfs41 section]

nfs41 ops:
[RFC 21/51] nfsd41: xdr stubs
[RFC 22/51] nfsd41: proc stubs
[RFC 23/51] nfsd41: exchange_id operation
[RFC 24/51] nfsd41: print exchange flags when purging client [RFC 25/51] nfsd41: create_session operation
[RFC 26/51] nfsd41: destroy_session operation
[RFC 27/51] nfsd41: sequence operation

backchannel support:
[RFC 28/51] FIXME: nfsd41: sunrpc: Added rpc server-side backchannel handling [RFC 29/51] nfsd: BUG_ON_UNLOCKED_STATE
[RFC 30/51] nfsd: lock state around nfs4_put_delegation in nfsd_break_deleg_cb err path [RFC 31/51] FIXME: nfsd: kref_get cb_client while doing the callback

callback support:
[RFC 32/51] nfsd41: callback infrastructure
[RFC 33/51] nfsd41: introduce cl_cb_mutex
[RFC 34/51] nfsd41: cb_sequence callback
[RFC 35/51] nfsd41: introduce nfs4_cb_call_sync for nfs4 and nfs41 [RFC 36/51] nfsd41: cb_recall callback

CREATE_EXCLUSIVE4_1:
[RFC 37/51] nfsd41: pass writable attrs mask to nfsd4_decode_fattr [RFC 38/51] nfsd41: support for 3-word long attribute bitmask [RFC 39/51] nfsd41: SUPPATTR_EXCLCREAT attribute
[RFC 40/51] nfsd41: CREATE_EXCLUSIVE4_1

replay cache:
[RFC 41/51] sunrpc: Add deferral save and restore state callback [RFC 42/51] nfsd: save and restore defer result pages
[RFC 43/51] nfsd: deferral processing
[RFC 44/51] nfsd41: slab cache for current session
[RFC 45/51] nfsd41: DRC save, restore, and clear functions [RFC 46/51] nfsd41: nfsd nfsd4_sequence DRC logic
[RFC 47/51] nfsd41: enforce NFS4ERR_SEQUENCE_POS operation order rules [RFC 48/51] nfsd41: nfsd DRC logic
[RFC 49/51] nfsd41: clear DRC cache on free_session
[RFC 50/51] nfsd41: Add a create session replay cache
[RFC 51/51] nfsd41: print DRC statistics