md.h

unxi下共享内存的使用

/*
   md.h : Multiple Devices driver for Linux
          Copyright (C) 1996-98 Ingo Molnar, Gadi Oxman
          Copyright (C) 1994-96 Marc ZYNGIER
	  <[e-mail]> or
	  <[e-mail]>
	  
   This program 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, or (at your option)
   any later version.
   
   You should have received a copy of the GNU General Public License
   (for example /usr/src/linux/COPYING); if not, write to the Free
   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  
*/

#ifndef _MD_H
#define _MD_H

#include <linux/mm.h>
#include <linux/fs.h>
#include <linux/blkdev.h>
#include <asm/semaphore.h>
#include <linux/major.h>
#include <linux/ioctl.h>
#include <linux/types.h>
#include <asm/bitops.h>
#include <linux/module.h>
#include <linux/hdreg.h>
#include <linux/proc_fs.h>
#include <linux/smp_lock.h>
#include <linux/delay.h>
#include <net/checksum.h>
#include <linux/random.h>
#include <linux/locks.h>
#include <linux/kernel_stat.h>
#include <asm/io.h>
#include <linux/completion.h>

#include <linux/raid/md_compatible.h>
/*
 * 'md_p.h' holds the 'physical' layout of RAID devices
 * 'md_u.h' holds the user <=> kernel API
 *
 * 'md_k.h' holds kernel internal definitions
 */

#include <linux/raid/md_p.h>
#include <linux/raid/md_u.h>
#include <linux/raid/md_k.h>

/*
 * Different major versions are not compatible.
 * Different minor versions are only downward compatible.
 * Different patchlevel versions are downward and upward compatible.
 */
#define MD_MAJOR_VERSION                0
#define MD_MINOR_VERSION                90
#define MD_PATCHLEVEL_VERSION           0

extern int md_size[MAX_MD_DEVS];
extern struct hd_struct md_hd_struct[MAX_MD_DEVS];

extern void add_mddev_mapping (mddev_t *mddev, kdev_t dev, void *data);
extern void del_mddev_mapping (mddev_t *mddev, kdev_t dev);
extern char * partition_name (kdev_t dev);
extern int register_md_personality (int p_num, mdk_personality_t *p);
extern int unregister_md_personality (int p_num);
extern mdk_thread_t * md_register_thread (void (*run) (void *data),
				void *data, const char *name);
extern void md_unregister_thread (mdk_thread_t *thread);
extern void md_wakeup_thread(mdk_thread_t *thread);
extern void md_interrupt_thread (mdk_thread_t *thread);
extern int md_update_sb (mddev_t *mddev);
extern int md_do_sync(mddev_t *mddev, mdp_disk_t *spare);
extern void md_done_sync(mddev_t *mddev, int blocks, int ok);
extern void md_sync_acct(kdev_t dev, unsigned long nr_sectors);
extern void md_recover_arrays (void);
extern int md_check_ordering (mddev_t *mddev);
extern int md_notify_reboot(struct notifier_block *this,
					unsigned long code, void *x);
extern int md_error (mddev_t *mddev, kdev_t rdev);
extern int md_run_setup(void);

extern void md_print_devices (void);

#define MD_BUG(x...) { printk("md: bug in file %s, line %d\n", __FILE__, __LINE__); md_print_devices(); }

#endif