include/linux/kmap_compat.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright (c) 2015 by Chunwei Chen. All rights reserved.
  24  */
  25
  26 #ifndef _ZFS_KMAP_H
  27 #define _ZFS_KMAP_H
  28
  29 #include <linux/highmem.h>
  30 #include <linux/uaccess.h>
  31
  32 #ifdef HAVE_1ARG_KMAP_ATOMIC
  33 /* 2.6.37 API change */
  34 #define zfs_kmap_atomic(page, km_type)          kmap_atomic(page)
  35 #define zfs_kunmap_atomic(addr, km_type)        kunmap_atomic(addr)
  36 #else
  37 #define zfs_kmap_atomic(page, km_type)          kmap_atomic(page, km_type)
  38 #define zfs_kunmap_atomic(addr, km_type)        kunmap_atomic(addr, km_type)
  39 #endif
  40
  41 /* 5.0 API change - no more 'type' argument for access_ok() */
  42 #ifdef HAVE_ACCESS_OK_TYPE
  43 #define zfs_access_ok(type, addr, size) access_ok(type, addr, size)
  44 #else
  45 #define zfs_access_ok(type, addr, size) access_ok(addr, size)
  46 #endif
  47
  48 #endif  /* _ZFS_KMAP_H */