linux-toradex.git/include/linux/nfsd/state.h, branch v2.6.31.7

Merge branch 'for-2.6.31' of git://fieldses.org/git/linux-nfsd

2009-06-22T19:55:50+00:00

* 'for-2.6.31' of git://fieldses.org/git/linux-nfsd: (60 commits)
  SUNRPC: Fix the TCP server's send buffer accounting
  nfsd41: Backchannel: minorversion support for the back channel
  nfsd41: Backchannel: cleanup nfs4.0 callback encode routines
  nfsd41: Remove ip address collision detection case
  nfsd: optimise the starting of zero threads when none are running.
  nfsd: don't take nfsd_mutex twice when setting number of threads.
  nfsd41: sanity check client drc maxreqs
  nfsd41: move channel attributes from nfsd4_session to a nfsd4_channel_attr struct
  NFS: kill off complicated macro 'PROC'
  sunrpc: potential memory leak in function rdma_read_xdr
  nfsd: minor nfsd_vfs_write cleanup
  nfsd: Pull write-gathering code out of nfsd_vfs_write
  nfsd: track last inode only in use_wgather case
  sunrpc: align cache_clean work's timer
  nfsd: Use write gathering only with NFSv2
  NFSv4: kill off complicated macro 'PROC'
  NFSv4: do exact check about attribute specified
  knfsd: remove unreported filehandle stats counters
  knfsd: fix reply cache memory corruption
  knfsd: reply cache cleanups
  ...

nfsd41: Backchannel: minorversion support for the back channel

2009-06-19T01:33:57+00:00

Prepare to share backchannel code with NFSv4.1.

Signed-off-by: Andy Adamson 
Signed-off-by: Benny Halevy 
Signed-off-by: Ricardo Labiaga 
[nfsd41: use nfsd4_cb_sequence for callback minorversion]
Signed-off-by: Benny Halevy 
Signed-off-by: J. Bruce Fields

nfs41: exchange_id operation

2009-06-17T19:23:57+00:00

Implement the exchange_id operation conforming to
http://tools.ietf.org/html/draft-ietf-nfsv4-minorversion1-26

Unlike NFSv4.0, NFSv4.1 requires machine credentials. RPC_AUTH_GSS machine
credentials will be passed into the kernel at mount time to be available for
the exchange_id operation.

RPC_AUTH_UNIX root mounts can use the UNIX root credential. Store the root
credential in the nfs_client struct.

Without a credential, NFSv4.1 state renewal fails.

[nfs41: establish clientid via exchange id only if cred != NULL]
Signed-off-by: Andy Adamson
Signed-off-by: Benny Halevy 
[nfsd41: move nfstime4 from under CONFIG_NFS_V4_1]
Signed-off-by: Andy Adamson 
Signed-off-by: Benny Halevy 
[nfs41: do not wait a lease time in exchange id]
Signed-off-by: Andy Adamson 
Signed-off-by: Benny Halevy 
[nfs41: pass *session in seq_args and seq_res]
Signed-off-by: Benny Halevy 
Signed-off-by: Trond Myklebust 
[nfs41: Ignoring impid in decode_exchange_id is missing a READ_BUF]
Signed-off-by: Benny Halevy 
[nfs41: fix Xcode_exchange_id's xdr Xcoding pointer type]
[nfs41: get rid of unused struct nfs41_exchange_id_res members]
Signed-off-by: Benny Halevy

nfsd41: move channel attributes from nfsd4_session to a nfsd4_channel_attr struct

2009-06-16T17:13:45+00:00

the change is valid for both the forechannel and the backchannel (currently dummy)

Signed-off-by: Alexandros Batsakis 
Signed-off-by: Benny Halevy 
Signed-off-by: J. Bruce Fields

nfsd4: track recall retries in nfs4_delegation

2009-05-02T00:11:12+00:00

Move this out of a local variable into the nfs4_delegation object in
preparation for making this an async rpc call (at which point we'll need
any state like this in a common object that's preserved across function
calls).

Signed-off-by: J. Bruce Fields

nfsd4: remove unused dl_trunc

2009-05-01T23:57:46+00:00

There's no point in keeping this field around--it's always zero.

(Background: the protocol allows you to tell the client that the file is
about to be truncated, as an optimization to save the client from
writing back dirty pages that will just be discarded.  We don't
implement this hint.  If we do some day, adding this field back in will
be the least of the work involved.)

Signed-off-by: J. Bruce Fields

nfsd4: eliminate struct nfs4_cb_recall

2009-05-01T23:50:00+00:00

The nfs4_cb_recall struct is used only in nfs4_delegation, so its
pointer to the containing delegation is unnecessary--we could just use
container_of().

But there's no real reason to have this a separate struct at all--just
move these fields to nfs4_delegation.

Signed-off-by: J. Bruce Fields

nfsd4: rename callback struct to cb_conn

2009-05-01T21:31:44+00:00

I want to use the name for a struct that actually does represent a
single callback.

(Actually, I've never been sure it helps to a separate struct for the
callback information.  Some day maybe those fields could just be dumped
into struct nfs4_client.  I don't know.)

Signed-off-by: J. Bruce Fields

nfsd4: lookup up callback cred only once

2009-04-29T20:45:03+00:00

Lookup the callback cred once and then use it for all subsequent
callbacks.

Signed-off-by: J. Bruce Fields

nfsd41: stateid handling

2009-04-04T00:41:19+00:00

When sessions are used, stateful operation sequenceid and stateid handling
are not used. When sessions are used,  on the first open set the seqid to 1,
mark state confirmed and skip seqid processing.

When sessionas are used the stateid generation number is ignored when it is zero
whereas without sessions bad_stateid or stale stateid is returned.

Add flags to propagate session use to all stateful ops and down to
check_stateid_generation.

Signed-off-by: Benny Halevy 
Signed-off-by: Andy Adamson 
[nfsd4_has_session should return a boolean, not u32]
Signed-off-by: Benny Halevy 
[nfsd41: pass nfsd4_compoundres * to nfsd4_process_open1]
[nfsd41: calculate HAS_SESSION in nfs4_preprocess_stateid_op]
[nfsd41: calculate HAS_SESSION in nfs4_preprocess_seqid_op]
Signed-off-by: Benny Halevy 
Signed-off-by: J. Bruce Fields