linux-toradex.git/fs/lockd, branch v4.6-rc6

lockd: constify nlmsvc_binding structure

2016-01-07T15:10:50+00:00

The nlmsvc_binding structure is never modified, so declare it as const.

Done with the help of Coccinelle.

Signed-off-by: Julia Lawall 
Signed-off-by: J. Bruce Fields

lockd: use to_delayed_work

2016-01-07T15:10:50+00:00

Use to_delayed_work() instead of open-coding it.

Signed-off-by: Geliang Tang 
Signed-off-by: J. Bruce Fields

lockd: Register callbacks on the inetaddr_chain and inet6addr_chain

2015-12-23T15:08:16+00:00

Register callbacks on inetaddr_chain and inet6addr_chain to trigger
cleanup of lockd transport sockets when an ip address is deleted.

Signed-off-by: Scott Mayhew 
Signed-off-by: J. Bruce Fields

Merge tag 'nfsd-4.4' of git://linux-nfs.org/~bfields/linux

2015-11-12T04:11:28+00:00

Pull nfsd updates from Bruce Fields:
 "Apologies for coming a little late in the merge window.  Fortunately
  this is another fairly quiet one:

  Mainly smaller bugfixes and cleanup.  We're still finding some bugs
  from the breakup of the big NFSv4 state lock in 3.17 -- thanks
  especially to Andrew Elble and Jeff Layton for tracking down some of
  the remaining races"

* tag 'nfsd-4.4' of git://linux-nfs.org/~bfields/linux:
  svcrpc: document lack of some memory barriers
  nfsd: fix race with open / open upgrade stateids
  nfsd: eliminate sending duplicate and repeated delegations
  nfsd: remove recurring workqueue job to clean DRC
  SUNRPC: drop stale comment in svc_setup_socket()
  nfsd: ensure that seqid morphing operations are atomic wrt to copies
  nfsd: serialize layout stateid morphing operations
  nfsd: improve client_has_state to check for unused openowners
  nfsd: fix clid_inuse on mount with security change
  sunrpc/cache: make cache flushing more reliable.
  nfsd: move include of state.h from trace.c to trace.h
  sunrpc: avoid warning in gss_key_timeout
  lockd: get rid of reference-counted NSM RPC clients
  SUNRPC: Use MSG_SENDPAGE_NOTLAST when calling sendpage()
  lockd: create NSM handles per net namespace
  nfsd: switch unsigned char flags in svc_fh to bools
  nfsd: move svc_fh->fh_maxsize to just after fh_handle
  nfsd: drop null test before destroy functions
  nfsd: serialize state seqid morphing operations

lockd: get rid of reference-counted NSM RPC clients

2015-10-23T19:57:27+00:00

Currently we have reference-counted per-net NSM RPC client
which created on the first monitor request and destroyed
after the last unmonitor request. It's needed because
RPC client need to know 'utsname()->nodename', but utsname()
might be NULL when nsm_unmonitor() called.

So instead of holding the rpc client we could just save nodename
in struct nlm_host and pass it to the rpc_create().
Thus ther is no need in keeping rpc client until last
unmonitor request. We could create separate RPC clients
for each monitor/unmonitor requests.

Signed-off-by: Andrey Ryabinin 
Signed-off-by: J. Bruce Fields

Move locks API users to locks_lock_inode_wait()

2015-10-22T18:57:36+00:00

Instead of having users check for FL_POSIX or FL_FLOCK to call the correct
locks API function, use the check within locks_lock_inode_wait().  This
allows for some later cleanup.

Signed-off-by: Benjamin Coddington 
Signed-off-by: Jeff Layton

lockd: create NSM handles per net namespace

2015-10-12T21:31:05+00:00

Commit cb7323fffa85 ("lockd: create and use per-net NSM
 RPC clients on MON/UNMON requests") introduced per-net
NSM RPC clients. Unfortunately this doesn't make any sense
without per-net nsm_handle.

E.g. the following scenario could happen
Two hosts (X and Y) in different namespaces (A and B) share
the same nsm struct.

1. nsm_monitor(host_X) called => NSM rpc client created,
	nsm->sm_monitored bit set.
2. nsm_mointor(host-Y) called => nsm->sm_monitored already set,
	we just exit. Thus in namespace B ln->nsm_clnt == NULL.
3. host X destroyed => nsm->sm_count decremented to 1
4. host Y destroyed => nsm_unmonitor() => nsm_mon_unmon() => NULL-ptr
	dereference of *ln->nsm_clnt

So this could be fixed by making per-net nsm_handles list,
instead of global. Thus different net namespaces will not be able
share the same nsm_handle.

Signed-off-by: Andrey Ryabinin 
Cc: 
Signed-off-by: J. Bruce Fields

lockd: NLM grace period shouldn't block NFSv4 opens

2015-08-13T14:22:06+00:00

NLM locks don't conflict with NFSv4 share reservations, so we're not
going to learn anything new by watiting for them.

They do conflict with NFSv4 locks and with delegations.

Signed-off-by: J. Bruce Fields

nfsd/sunrpc: turn enqueueing a svc_xprt into a svc_serv operation

2015-08-10T20:05:42+00:00

For now, all services use svc_xprt_do_enqueue, but once we add
workqueue-based service support, we'll need to do something different.

Signed-off-by: Shirley Ma 
Acked-by: Jeff Layton 
Tested-by: Shirley Ma 
Signed-off-by: J. Bruce Fields

nfsd/sunrpc: add a new svc_serv_ops struct and move sv_shutdown into it

2015-08-10T20:05:40+00:00

In later patches we'll need to abstract out more operations on a
per-service level, besides sv_shutdown and sv_function.

Declare a new svc_serv_ops struct to hold these operations, and move
sv_shutdown into this struct.

Signed-off-by: Shirley Ma 
Acked-by: Jeff Layton 
Tested-by: Shirley Ma 
Signed-off-by: J. Bruce Fields