81 lines
2.5 KiB
C
81 lines
2.5 KiB
C
/*
|
|
* GPL HEADER START
|
|
*
|
|
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 only,
|
|
* as published by the Free Software Foundation.
|
|
*
|
|
* This program 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 version 2 for more details (a copy is included
|
|
* in the LICENSE file that accompanied this code).
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* version 2 along with this program; If not, see
|
|
* http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
|
|
*
|
|
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
|
* CA 95054 USA or visit www.sun.com if you need additional information or
|
|
* have any questions.
|
|
*
|
|
* GPL HEADER END
|
|
*/
|
|
/*
|
|
* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
|
|
* Use is subject to license terms.
|
|
*
|
|
* Copyright (c) 2011, 2012, Intel Corporation.
|
|
*/
|
|
/*
|
|
* This file is part of Lustre, http://www.lustre.org/
|
|
* Lustre is a trademark of Sun Microsystems, Inc.
|
|
*
|
|
* libcfs/include/libcfs/linux/linux-mem.h
|
|
*
|
|
* Basic library routines.
|
|
*/
|
|
|
|
#ifndef __LIBCFS_LINUX_CFS_MEM_H__
|
|
#define __LIBCFS_LINUX_CFS_MEM_H__
|
|
|
|
#ifndef __LIBCFS_LIBCFS_H__
|
|
#error Do not #include this file directly. #include <linux/libcfs/libcfs.h> instead
|
|
#endif
|
|
|
|
#include <linux/mm.h>
|
|
#include <linux/vmalloc.h>
|
|
#include <linux/pagemap.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/memcontrol.h>
|
|
#include <linux/mm_inline.h>
|
|
|
|
#ifndef HAVE_LIBCFS_CPT
|
|
/* Need this for cfs_cpt_table */
|
|
#include "../libcfs_cpu.h"
|
|
#endif
|
|
|
|
#define CFS_PAGE_MASK (~((__u64)PAGE_SIZE-1))
|
|
#define page_index(p) ((p)->index)
|
|
|
|
#define memory_pressure_get() (current->flags & PF_MEMALLOC)
|
|
#define memory_pressure_set() do { current->flags |= PF_MEMALLOC; } while (0)
|
|
#define memory_pressure_clr() do { current->flags &= ~PF_MEMALLOC; } while (0)
|
|
|
|
#if BITS_PER_LONG == 32
|
|
/* limit to lowmem on 32-bit systems */
|
|
#define NUM_CACHEPAGES \
|
|
min(totalram_pages, 1UL << (30 - PAGE_SHIFT) * 3 / 4)
|
|
#else
|
|
#define NUM_CACHEPAGES totalram_pages
|
|
#endif
|
|
|
|
#define DECL_MMSPACE mm_segment_t __oldfs
|
|
#define MMSPACE_OPEN \
|
|
do { __oldfs = get_fs(); set_fs(get_ds()); } while (0)
|
|
#define MMSPACE_CLOSE set_fs(__oldfs)
|
|
|
|
#endif /* __LINUX_CFS_MEM_H__ */
|