lustre/sec/gks/gks_internal.h

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  */
   4
   5 #ifndef _GKS_INTERNAL_H
   6 #define _GKS_INTERNAL_H
   7
   8 #define GKS_SERVICE_WATCHDOG_TIMEOUT 30000
   9 struct mdc_rpc_lock {
  10         struct semaphore rpcl_sem;
  11         struct lookup_intent *rpcl_it;
  12 };
  13
  14 static inline void gkc_init_rpc_lock(struct mdc_rpc_lock *lck)
  15 {
  16         sema_init(&lck->rpcl_sem, 1);
  17         lck->rpcl_it = NULL;
  18 }
  19
  20 static inline void gkc_get_rpc_lock(struct mdc_rpc_lock *lck,
  21                                     struct lookup_intent *it)
  22 {
  23         ENTRY;
  24         down(&lck->rpcl_sem);
  25         if (it) {
  26                 lck->rpcl_it = it;
  27         }
  28 }
  29
  30 static inline void gkc_put_rpc_lock(struct mdc_rpc_lock *lck,
  31                                     struct lookup_intent *it)
  32 {
  33         EXIT;
  34         if (it == NULL) {
  35                 LASSERT(it == lck->rpcl_it);
  36                 up(&lck->rpcl_sem);
  37                 return;
  38         }
  39         if (it) {
  40                 LASSERT(it == lck->rpcl_it);
  41                 lck->rpcl_it = NULL;
  42                 up(&lck->rpcl_sem);
  43         }
  44 }
  45
  46 #endif /* _GKS_INTERNAL_H */