| /* |
| * Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC. |
| * Copyright (C) 2007 The Regents of the University of California. |
| * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER). |
| * Written by Brian Behlendorf <behlendorf1@llnl.gov>. |
| * UCRL-CODE-235197 |
| * |
| * This file is part of the SPL, Solaris Porting Layer. |
| * For details, see <http://zfsonlinux.org/>. |
| * |
| * The SPL is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the |
| * Free Software Foundation; either version 2 of the License, or (at your |
| * option) any later version. |
| * |
| * The SPL is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * for more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with the SPL. If not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #ifndef _SPL_VMSYSTM_H |
| #define _SPL_VMSYSTM_H |
| |
| #include <linux/mmzone.h> |
| #include <linux/mm.h> |
| #include <linux/swap.h> |
| #include <linux/highmem.h> |
| #include <linux/vmalloc.h> |
| #include <sys/types.h> |
| #include <asm/uaccess.h> |
| |
| #ifdef HAVE_TOTALRAM_PAGES_FUNC |
| #define zfs_totalram_pages totalram_pages() |
| #else |
| #define zfs_totalram_pages totalram_pages |
| #endif |
| |
| #ifdef HAVE_TOTALHIGH_PAGES |
| #define zfs_totalhigh_pages totalhigh_pages() |
| #else |
| #define zfs_totalhigh_pages totalhigh_pages |
| #endif |
| |
| #define membar_producer() smp_wmb() |
| #define physmem zfs_totalram_pages |
| |
| #define xcopyin(from, to, size) copy_from_user(to, from, size) |
| #define xcopyout(from, to, size) copy_to_user(to, from, size) |
| |
| static __inline__ int |
| copyin(const void *from, void *to, size_t len) |
| { |
| /* On error copyin routine returns -1 */ |
| if (xcopyin(from, to, len)) |
| return (-1); |
| |
| return (0); |
| } |
| |
| static __inline__ int |
| copyout(const void *from, void *to, size_t len) |
| { |
| /* On error copyout routine returns -1 */ |
| if (xcopyout(from, to, len)) |
| return (-1); |
| |
| return (0); |
| } |
| |
| static __inline__ int |
| copyinstr(const void *from, void *to, size_t len, size_t *done) |
| { |
| size_t rc; |
| |
| if (len == 0) |
| return (-ENAMETOOLONG); |
| |
| /* XXX: Should return ENAMETOOLONG if 'strlen(from) > len' */ |
| |
| memset(to, 0, len); |
| rc = copyin(from, to, len - 1); |
| if (done != NULL) |
| *done = rc; |
| |
| return (0); |
| } |
| |
| #endif /* SPL_VMSYSTM_H */ |