litmus-rt.git/fs/lockd, branch v2.6.24-rc3

NFS/SUNRPC: use transport protocol naming

2007-10-09T21:17:53+00:00

Instead of an { address family, raw IP protocol number }-tuple, use the
newly-defined RPC identifier when creating clients in the upper layers.

Signed-off-by: Tom Talpey 
Signed-off-by: Trond Myklebust

LOCKD: Convert printk's to dprintk's in lockd XDR routines

2007-10-09T21:17:12+00:00

Due to recent edict to remove or replace printk's that might flood the
system log.

Signed-off-by: Chuck Lever 
Signed-off-by: Trond Myklebust

NLM: Fix a memory leak in nlmsvc_testlock

2007-10-09T19:38:26+00:00

The recent fix for a circular lock dependency unfortunately introduced a
potential memory leak in the event where the call to nlmsvc_lookup_host
fails for some reason.

Thanks to Roel Kluin for spotting this.

Signed-off-by: Trond Myklebust 
Signed-off-by: Linus Torvalds

NLM: Fix a circular lock dependency in lockd

2007-09-26T16:22:04+00:00

The problem is that the garbage collector for the 'host' structures
nlm_gc_hosts(), holds nlm_host_mutex while calling down to
nlmsvc_mark_resources, which, eventually takes the file->f_mutex.

We cannot therefore call nlmsvc_lookup_host() from within
nlmsvc_create_block, since the caller will already hold file->f_mutex, so
the attempt to grab nlm_host_mutex may deadlock.

Fix the problem by calling nlmsvc_lookup_host() outside the file->f_mutex.

Signed-off-by: Trond Myklebust 
Signed-off-by: Linus Torvalds

lockd and nfsd endianness annotation fixes

2007-07-26T18:11:56+00:00

Signed-off-by: Al Viro 
Signed-off-by: Linus Torvalds

knfsd: lockd: nfsd4: use same grace period for lockd and nfsd4

2007-07-17T17:23:07+00:00

Both lockd and (in the nfsv4 case) nfsd enforce a "grace period" after reboot,
during which clients may reclaim locks from the previous server instance, but
may not acquire new locks.

Currently the lockd and nfsd enforce grace periods of different lengths.  This
may cause problems when we reboot a server with both v2/v3 and v4 clients.
For example, if the lockd grace period is shorter (as is likely the case),
then a v3 client might acquire a new lock that conflicts with a lock already
held (but not yet reclaimed) by a v4 client.

This patch calculates a lease time that lockd and nfsd can both use.

Signed-off-by: Marc Eshel 
Signed-off-by: J. Bruce Fields 
Signed-off-by: Neil Brown 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Freezer: make kernel threads nonfreezable by default

2007-07-17T17:23:02+00:00

Currently, the freezer treats all tasks as freezable, except for the kernel
threads that explicitly set the PF_NOFREEZE flag for themselves.  This
approach is problematic, since it requires every kernel thread to either
set PF_NOFREEZE explicitly, or call try_to_freeze(), even if it doesn't
care for the freezing of tasks at all.

It seems better to only require the kernel threads that want to or need to
be frozen to use some freezer-related code and to remove any
freezer-related code from the other (nonfreezable) kernel threads, which is
done in this patch.

The patch causes all kernel threads to be nonfreezable by default (ie.  to
have PF_NOFREEZE set by default) and introduces the set_freezable()
function that should be called by the freezable kernel threads in order to
unset PF_NOFREEZE.  It also makes all of the currently freezable kernel
threads call set_freezable(), so it shouldn't cause any (intentional)
change of behaviour to appear.  Additionally, it updates documentation to
describe the freezing of tasks more accurately.

[akpm@linux-foundation.org: build fixes]
Signed-off-by: Rafael J. Wysocki 
Acked-by: Nigel Cunningham 
Cc: Pavel Machek 
Cc: Oleg Nesterov 
Cc: Gautham R Shenoy 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

NLM: fix source address of callback to client

2007-07-11T03:40:49+00:00

Use the destination address of the original NLM request as the
source address in callbacks to the client.

Signed-off-by: Frank van Maarseveen 
Signed-off-by: Trond Myklebust

SUNRPC: Remove redundant calls to rpciod_up()/rpciod_down()

2007-07-11T03:40:30+00:00

Signed-off-by: Trond Myklebust

SUNRPC: Kill rpc_clnt->cl_oneshot

2007-07-11T03:40:29+00:00

Replace it with explicit calls to rpc_shutdown_client() or
rpc_destroy_client() (for the case of asynchronous calls).

Signed-off-by: Trond Myklebust