include/linux/mm_compat.h

   1 /*****************************************************************************\
   2  *  Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
   3  *  Copyright (C) 2007 The Regents of the University of California.
   4  *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
   5  *  Written by Brian Behlendorf <behlendorf1@llnl.gov>.
   6  *  UCRL-CODE-235197
   7  *
   8  *  This file is part of the SPL, Solaris Porting Layer.
   9  *  For details, see <http://github.com/behlendorf/spl/>.
  10  *
  11  *  The SPL is free software; you can redistribute it and/or modify it
  12  *  under the terms of the GNU General Public License as published by the
  13  *  Free Software Foundation; either version 2 of the License, or (at your
  14  *  option) any later version.
  15  *
  16  *  The SPL is distributed in the hope that it will be useful, but WITHOUT
  17  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  18  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  19  *  for more details.
  20  *
  21  *  You should have received a copy of the GNU General Public License along
  22  *  with the SPL.  If not, see <http://www.gnu.org/licenses/>.
  23 \*****************************************************************************/
  24
  25 #ifndef _SPL_MM_COMPAT_H
  26 #define _SPL_MM_COMPAT_H
  27
  28 #include <linux/mm.h>
  29 #include <linux/fs.h>
  30
  31 /*
  32  * Linux 2.6.31 API Change.
  33  * Individual pages_{min,low,high} moved in to watermark array.
  34  */
  35 #ifndef min_wmark_pages
  36 #define min_wmark_pages(z)      (z->pages_min)
  37 #endif
  38
  39 #ifndef low_wmark_pages
  40 #define low_wmark_pages(z)      (z->pages_low)
  41 #endif
  42
  43 #ifndef high_wmark_pages
  44 #define high_wmark_pages(z)     (z->pages_high)
  45 #endif
  46
  47 /*
  48  * 2.6.37 API compat,
  49  * The function invalidate_inodes() is no longer exported by the kernel.
  50  * The prototype however is still available which means it is safe
  51  * to acquire the symbol's address using spl_kallsyms_lookup_name().
  52  */
  53 #ifndef HAVE_INVALIDATE_INODES
  54 typedef int (*invalidate_inodes_t)(struct super_block *sb);
  55 extern invalidate_inodes_t invalidate_inodes_fn;
  56 #define invalidate_inodes(sb)   invalidate_inodes_fn(sb)
  57 #endif /* HAVE_INVALIDATE_INODES */
  58
  59 #endif /* SPL_MM_COMPAT_H */