module/os/freebsd/spl/spl_vm.c

   1 /*
   2  * Copyright (c) 2013 EMC Corp.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  */
  26
  27 #include <sys/types.h>
  28 #include <sys/param.h>
  29 #include <sys/counter.h>
  30
  31 #include <sys/byteorder.h>
  32 #include <sys/lock.h>
  33 #include <sys/freebsd_rwlock.h>
  34 #include <sys/vm.h>
  35
  36 #include <vm/vm.h>
  37 #include <vm/vm_param.h>
  38 #include <vm/vm_object.h>
  39 #include <vm/vm_page.h>
  40 #include <vm/vm_pager.h>
  41
  42 const int zfs_vm_pagerret_bad = VM_PAGER_BAD;
  43 const int zfs_vm_pagerret_error = VM_PAGER_ERROR;
  44 const int zfs_vm_pagerret_ok = VM_PAGER_OK;
  45 const int zfs_vm_pagerput_sync = VM_PAGER_PUT_SYNC;
  46 const int zfs_vm_pagerput_inval = VM_PAGER_PUT_INVAL;
  47
  48 void
  49 zfs_vmobject_assert_wlocked(vm_object_t object)
  50 {
  51
  52         /*
  53          * This is not ideal because FILE/LINE used by assertions will not
  54          * be too helpful, but it must be an hard function for
  55          * compatibility reasons.
  56          */
  57         VM_OBJECT_ASSERT_WLOCKED(object);
  58 }
  59
  60 void
  61 zfs_vmobject_wlock(vm_object_t object)
  62 {
  63
  64         VM_OBJECT_WLOCK(object);
  65 }
  66
  67 void
  68 zfs_vmobject_wunlock(vm_object_t object)
  69 {
  70
  71         VM_OBJECT_WUNLOCK(object);
  72 }