1 files changed, 84 insertions, 0 deletions
diff --git a/include/spl/sys/vmsystm.h b/include/spl/sys/vmsystm.h
new file mode 100644
index 000000000..2b48fe0e3
--- /dev/null
+++ b/include/spl/sys/vmsystm.h
@@ -0,0 +1,84 @@
+/*
+ *  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 <[email protected]>.
+ *  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>
+
+#define	membar_producer()		smp_wmb()
+#define	physmem				totalram_pages
+#define	freemem			(nr_free_pages() + \
+				global_page_state(NR_INACTIVE_FILE) + \
+				global_page_state(NR_INACTIVE_ANON) + \
+				global_page_state(NR_SLAB_RECLAIMABLE))
+
+#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 */