[linux-lvm] clvmd on openais

["Xinwei Hu" <hxinwei gmail com>]

Hi all,
  clvmd-openais.c uses saLckResourceLockAsync and
saLckResourceUnlockAsync. But they then pthread_cond_wait the lock
operation to finished.

  Since we have to wait, why not switch to use saLckResourceLock and
saLckResourceUnlock directly ? Are there any reasons behind this ?