1 files changed, 62 insertions, 0 deletions
diff --git a/fs/ntfs/malloc.h b/fs/ntfs/malloc.h
new file mode 100644
index 0000000..fac5944
--- /dev/null
+++ b/fs/ntfs/malloc.h
@@ -0,0 +1,62 @@
+/*
+ * malloc.h - NTFS kernel memory handling. Part of the Linux-NTFS project.
+ *
+ * Copyright (c) 2001-2004 Anton Altaparmakov
+ *
+ * This program/include file 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.
+ *
+ * This program/include file 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 this program (in the main directory of the Linux-NTFS
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _LINUX_NTFS_MALLOC_H
+#define _LINUX_NTFS_MALLOC_H
+
+#include <linux/vmalloc.h>
+#include <linux/slab.h>
+#include <linux/highmem.h>
+
+/**
+ * ntfs_malloc_nofs - allocate memory in multiples of pages
+ * @size	number of bytes to allocate
+ *
+ * Allocates @size bytes of memory, rounded up to multiples of PAGE_SIZE and
+ * returns a pointer to the allocated memory.
+ *
+ * If there was insufficient memory to complete the request, return NULL.
+ */
+static inline void *ntfs_malloc_nofs(unsigned long size)
+{
+	if (likely(size <= PAGE_SIZE)) {
+		BUG_ON(!size);
+		/* kmalloc() has per-CPU caches so is faster for now. */
+		return kmalloc(PAGE_SIZE, GFP_NOFS);
+		/* return (void *)__get_free_page(GFP_NOFS | __GFP_HIGHMEM); */
+	}
+	if (likely(size >> PAGE_SHIFT < num_physpages))
+		return __vmalloc(size, GFP_NOFS | __GFP_HIGHMEM, PAGE_KERNEL);
+	return NULL;
+}
+
+static inline void ntfs_free(void *addr)
+{
+	if (likely(((unsigned long)addr < VMALLOC_START) ||
+			((unsigned long)addr >= VMALLOC_END ))) {
+		kfree(addr);
+		/* free_page((unsigned long)addr); */
+		return;
+	}
+	vfree(addr);
+}
+
+#endif /* _LINUX_NTFS_MALLOC_H */