text: /*
   * Copyright 2000, International Business Machines Corporation and others.
   * All Rights Reserved.
   *
   * This software has been released under the terms of the IBM Public
   * License.  For details, see the LICENSE file in the top-level source
   * directory or online at http://www.openafs.org/dl/license10.html
   */
  
  #include <afsconfig.h>
  #include "afs/param.h"
  
  #include "afs/sysincludes.h"    /*Standard vendor system headers */
  #include "afsincludes.h"        /*AFS-based standard headers */
  
  extern struct vnodeops *afs_ops;
  
  int
  osi_TryEvictVCache(struct vcache *avc, int *slept, int defersleep)
  {
      int code;
      if (!VREFCOUNT_GT(avc,0)
  	&& avc->opens == 0 && (avc->f.states & CUnlinkedDel) == 0) {
  	code = afs_FlushVCache(avc, slept);
  	if (code == 0)
  	    return 1;
      }
      return 0;
  }
  
  struct vcache *
  osi_NewVnode(void)
  {
      struct vcache *tvc;
  
      tvc = afs_osi_Alloc(sizeof(struct vcache));
      if (tvc == NULL) {
  	return NULL;
      }
  
  #ifdef	KERNEL_HAVE_PIN
      pin((char *)tvc, sizeof(struct vcache));	/* XXX */
  #endif
  
      return tvc;
  }
  
  void
  osi_PrePopulateVCache(struct vcache *avc)
  {
      memset(avc, 0, sizeof(struct vcache));
  
  #ifdef	AFS_AIX32_ENV
      LOCK_INIT(&avc->pvmlock, "vcache pvmlock");
      avc->vmh = avc->segid = NULL;
      avc->credp = NULL;
  #endif
  
      /* Don't forget to free the gnode space */
      avc->v.v_gnode = osi_AllocSmallSpace(sizeof(struct gnode));
      memset(avc->v.v_gnode, 0, sizeof(struct gnode));
  }
  
  void
  osi_AttachVnode(struct vcache *avc, int seq)
  {
  }
  
  void
  osi_PostPopulateVCache(struct vcache *avc)
  {
      avc->v.v_op = afs_ops;
  
      avc->v.v_vfsp = afs_globalVFS;
      avc->v.v_type = VREG;
  
      avc->v.v_vfsnext = afs_globalVFS->vfs_vnodes;	/* link off vfs */
      avc->v.v_vfsprev = NULL;
      afs_globalVFS->vfs_vnodes = &avc->v;
      if (avc->v.v_vfsnext != NULL)
  	avc->v.v_vfsnext->v_vfsprev = &avc->v;
      avc->v.v_next = avc->v.v_gnode->gn_vnode;	/*Single vnode per gnode for us! */
      avc->v.v_gnode->gn_vnode = &avc->v;
  }
  
  int
  osi_vnhold(struct vcache *avc)
  {
      VN_HOLD(AFSTOV(avc));
      return 0;
  }
  