nfs: add lock annotations to squelch sparse warnings

sparse, being a static analyzer, emits the following warnings:

  context imbalance in 'nfs_server_list_start' - wrong count at exit
  context imbalance in 'nfs_server_list_start' - unexpected unlock
  context imbalance in 'nfs_volume_list_start' - wrong count at exit
  context imbalance in 'nfs_volume_list_start' - unexpected unlock

Help it by annotating the pairs of functions with __acquires and
__releases.

Cc: David Howells <dhowells@redhat.com>
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
apic: add lock annotations to squelch sparse warnings

sparse, being a static analyzer, emits the following warnings:

  context imbalance in 'lock_vector_lock' - wrong count at exit
  context imbalance in 'unlock_vector_lock' - unexpected unlock

Help it by annotating the pair of functions with __acquires and
__releases.

Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
irq: add lock annotation to squelch a sparse warning

__irq_put_desc_unlock() releases &desc->lock, but being a static
analyzer, sparse emits a warning:

  context imbalance in '__irq_put_desc_unlock' - unexpected unlock

Help it by annotating the function with a __release.  Do not annotate
its counterpart which acquires the lock, __irq_get_desc_lock(), because
it does so conditionally.

Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>