linux-toradex.git/fs/nfs/callback.c, branch v3.2.16

sunrpc: use better NUMA affinities

2011-08-19T17:25:36+00:00

Use NUMA aware allocations to reduce latencies and increase throughput.

sunrpc kthreads can use kthread_create_on_node() if pool_mode is
"percpu" or "pernode", and svc_prepare_thread()/svc_init_buffer() can
also take into account NUMA node affinity for memory allocations.

Signed-off-by: Eric Dumazet 
CC: "J. Bruce Fields" 
CC: Neil Brown 
CC: David Miller 
Reviewed-by: Greg Banks 
[bfields@redhat.com: fix up caller nfs41_callback_up]
Signed-off-by: J. Bruce Fields

NFS do not find client in NFSv4 pg_authenticate

2011-01-25T20:26:51+00:00

The information required to find the nfs_client cooresponding to the incoming
back channel request is contained in the NFS layer. Perform minimal checking
in the RPC layer pg_authenticate method, and push more detailed checking into
the NFS layer where the nfs_client can be found.

Signed-off-by: Andy Adamson 
Signed-off-by: Trond Myklebust

NFS rename client back channel transport field

2011-01-06T19:46:25+00:00

Differentiate from server backchannel

Signed-off-by: Andy Adamson 
Acked-by: Bruce Fields 
Signed-off-by: Trond Myklebust

NFS RPC_AUTH_GSS unsupported on v4.1 back channel

2011-01-06T19:46:24+00:00

Signed-off-by: Andy Adamson 
Acked-by: Bruce Fields 
Signed-off-by: Trond Myklebust

NFS refactor nfs_find_client and reference client across callback processing

2011-01-06T19:46:24+00:00

Fixes a bug where the nfs_client could be freed during callback processing.
Refactor nfs_find_client to use minorversion specific means to locate the
correct nfs_client structure.

In the NFS layer, V4.0 clients are found using the callback_ident field in the
CB_COMPOUND header.  V4.1 clients are found using the sessionID in the
CB_SEQUENCE operation which is also compared against the sessionID associated
with the back channel thread after a successful CREATE_SESSION.

Each of these methods finds the one an only nfs_client associated
with the incoming callback request - so nfs_find_client_next is not needed.

In the RPC layer, the pg_authenticate call needs to find the nfs_client. For
the v4.0 callback service, the callback identifier has not been decoded so a
search by address, version, and minorversion is used.  The sessionid for the
sessions based callback service has (usually) not been set for the
pg_authenticate on a CB_NULL call which can be sent prior to the return
of a CREATE_SESSION call, so the sessionid associated with the back channel
thread is not used to find the client in pg_authenticate for CB_NULL calls.

Pass the referenced nfs_client to each CB_COMPOUND operation being proceesed
via the new cb_process_state structure. The reference is held across
cb_compound processing.

Use the new cb_process_state struct to move the NFS4ERR_RETRY_UNCACHED_REP
processing from process_op into nfs4_callback_sequence where it belongs.

Signed-off-by: Andy Adamson 
Signed-off-by: Trond Myklebust

NFS associate sessionid with callback connection

2011-01-06T19:46:24+00:00

The sessions based callback service is started prior to the CREATE_SESSION call
so that it can handle CB_NULL requests which can be sent before the
CREATE_SESSION call returns and the session ID is known.

Set the callback sessionid after a sucessful CREATE_SESSION.

Signed-off-by: Andy Adamson 
Signed-off-by: Trond Myklebust

NFS use svc_create_xprt for NFSv4.1 callback service

2011-01-06T19:46:24+00:00

The new back channel transport means we call the normal creation routine as
well as svc_xprt_put.

Signed-off-by: Andy Adamson 
Signed-off-by: Trond Myklebust

BKL: remove extraneous #include

2010-11-17T16:59:32+00:00

The big kernel lock has been removed from all these files at some point,
leaving only the #include.

Remove this too as a cleanup.

Signed-off-by: Arnd Bergmann 
Signed-off-by: Linus Torvalds

sunrpc: Add net argument to svc_create_xprt

2010-10-01T21:18:54+00:00

Signed-off-by: Pavel Emelyanov 
Signed-off-by: J. Bruce Fields

param: use ops in struct kernel_param, rather than get and set fns directly

2010-08-11T13:34:13+00:00

This is more kernel-ish, saves some space, and also allows us to
expand the ops without breaking all the callers who are happy for the
new members to be NULL.

The few places which defined their own param types are changed to the
new scheme (more which crept in recently fixed in following patches).

Since we're touching them anyway, we change get() and set() to take a
const struct kernel_param (which they really are).  This causes some
harmless warnings until we fix them (in following patches).

To reduce churn, module_param_call creates the ops struct so the callers
don't have to change (and casts the functions to reduce warnings).
The modern version which takes an ops struct is called module_param_cb.

Signed-off-by: Rusty Russell 
Reviewed-by: Takashi Iwai 
Tested-by: Phil Carmody 
Cc: "David S. Miller" 
Cc: Ville Syrjala 
Cc: Dmitry Torokhov 
Cc: Alessandro Rubini 
Cc: Michal Januszewski 
Cc: Trond Myklebust 
Cc: "J. Bruce Fields" 
Cc: Neil Brown 
Cc: linux-kernel@vger.kernel.org
Cc: linux-input@vger.kernel.org
Cc: linux-fbdev-devel@lists.sourceforge.net
Cc: linux-nfs@vger.kernel.org
Cc: netdev@vger.kernel.org