From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- fs/ntfs/malloc.h | 62 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 fs/ntfs/malloc.h (limited to 'fs/ntfs/malloc.h') diff --git a/fs/ntfs/malloc.h b/fs/ntfs/malloc.h new file mode 100644 index 000000000000..fac5944df6d8 --- /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 +#include +#include + +/** + * 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 */ -- cgit v1.2.3