[net-next-2.6.git] / fs / gfs2 / util.h

/*
 * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
 * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
 *
 * This copyrighted material is made available to anyone wishing to use,
 * modify, copy, or redistribute it subject to the terms and conditions
 * of the GNU General Public License version 2.
 */

#ifndef __UTIL_DOT_H__
#define __UTIL_DOT_H__

#include "incore.h"

#define fs_printk(level, fs, fmt, arg...) \
	printk(level "GFS2: fsid=%s: " fmt , (fs)->sd_fsname , ## arg)

#define fs_info(fs, fmt, arg...) \
	fs_printk(KERN_INFO , fs , fmt , ## arg)

#define fs_warn(fs, fmt, arg...) \
	fs_printk(KERN_WARNING , fs , fmt , ## arg)

#define fs_err(fs, fmt, arg...) \
	fs_printk(KERN_ERR, fs , fmt , ## arg)


void gfs2_assert_i(struct gfs2_sbd *sdp);

#define gfs2_assert(sdp, assertion) \
do { \
	if (unlikely(!(assertion))) { \
		gfs2_assert_i(sdp); \
		BUG(); \
        } \
} while (0)


int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion,
			   const char *function, char *file, unsigned int line);

#define gfs2_assert_withdraw(sdp, assertion) \
((likely(assertion)) ? 0 : gfs2_assert_withdraw_i((sdp), #assertion, \
					__func__, __FILE__, __LINE__))


int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion,
		       const char *function, char *file, unsigned int line);

#define gfs2_assert_warn(sdp, assertion) \
((likely(assertion)) ? 0 : gfs2_assert_warn_i((sdp), #assertion, \
					__func__, __FILE__, __LINE__))


int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide,
		   const char *function, char *file, unsigned int line);

#define gfs2_consist(sdp) \
gfs2_consist_i((sdp), 0, __func__, __FILE__, __LINE__)


int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide,
			 const char *function, char *file, unsigned int line);

#define gfs2_consist_inode(ip) \
gfs2_consist_inode_i((ip), 0, __func__, __FILE__, __LINE__)


int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide,
			 const char *function, char *file, unsigned int line);

#define gfs2_consist_rgrpd(rgd) \
gfs2_consist_rgrpd_i((rgd), 0, __func__, __FILE__, __LINE__)


int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
		       const char *type, const char *function,
		       char *file, unsigned int line);

static inline int gfs2_meta_check_i(struct gfs2_sbd *sdp,
				    struct buffer_head *bh,
				    const char *function,
				    char *file, unsigned int line)
{
	struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
	u32 magic = be32_to_cpu(mh->mh_magic);
	if (unlikely(magic != GFS2_MAGIC))
		return gfs2_meta_check_ii(sdp, bh, "magic number", function,
					  file, line);
	return 0;
}

#define gfs2_meta_check(sdp, bh) \
gfs2_meta_check_i((sdp), (bh), __func__, __FILE__, __LINE__)


int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
			   u16 type, u16 t,
			   const char *function,
			   char *file, unsigned int line);

static inline int gfs2_metatype_check_i(struct gfs2_sbd *sdp,
					struct buffer_head *bh,
					u16 type,
					const char *function,
					char *file, unsigned int line)
{
	struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
	u32 magic = be32_to_cpu(mh->mh_magic);
	u16 t = be32_to_cpu(mh->mh_type);
	if (unlikely(magic != GFS2_MAGIC))
		return gfs2_meta_check_ii(sdp, bh, "magic number", function,
					  file, line);
        if (unlikely(t != type))
		return gfs2_metatype_check_ii(sdp, bh, type, t, function,
					      file, line);
	return 0;
}

#define gfs2_metatype_check(sdp, bh, type) \
gfs2_metatype_check_i((sdp), (bh), (type), __func__, __FILE__, __LINE__)

static inline void gfs2_metatype_set(struct buffer_head *bh, u16 type,
				     u16 format)
{
	struct gfs2_meta_header *mh;
	mh = (struct gfs2_meta_header *)bh->b_data;
	mh->mh_type = cpu_to_be32(type);
	mh->mh_format = cpu_to_be32(format);
}


int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function,
		    char *file, unsigned int line);

#define gfs2_io_error(sdp) \
gfs2_io_error_i((sdp), __func__, __FILE__, __LINE__);


int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh,
		       const char *function, char *file, unsigned int line);

#define gfs2_io_error_bh(sdp, bh) \
gfs2_io_error_bh_i((sdp), (bh), __func__, __FILE__, __LINE__);


extern struct kmem_cache *gfs2_glock_cachep;
extern struct kmem_cache *gfs2_glock_aspace_cachep;
extern struct kmem_cache *gfs2_inode_cachep;
extern struct kmem_cache *gfs2_bufdata_cachep;
extern struct kmem_cache *gfs2_rgrpd_cachep;
extern struct kmem_cache *gfs2_quotad_cachep;

static inline unsigned int gfs2_tune_get_i(struct gfs2_tune *gt,
					   unsigned int *p)
{
	unsigned int x;
	spin_lock(&gt->gt_spin);
	x = *p;
	spin_unlock(&gt->gt_spin);
	return x;
}

#define gfs2_tune_get(sdp, field) \
gfs2_tune_get_i(&(sdp)->sd_tune, &(sdp)->sd_tune.field)

void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap,
		      unsigned int bit, int new_value);
int gfs2_lm_withdraw(struct gfs2_sbd *sdp, char *fmt, ...);

#endif /* __UTIL_DOT_H__ */
Commit	Line	Data
b3b94faa DT	1	/*
b3b94faa DT	2	* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3a8a9a10	3	* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
b3b94faa DT	4	*
	5	* This copyrighted material is made available to anyone wishing to use,
	6	* modify, copy, or redistribute it subject to the terms and conditions
e9fc2aa0	7	* of the GNU General Public License version 2.
b3b94faa DT	8	*/
	9
	10	#ifndef __UTIL_DOT_H__
	11	#define __UTIL_DOT_H__
	12
f2f7ba52	13	#include "incore.h"
b3b94faa DT	14
	15	#define fs_printk(level, fs, fmt, arg...) \
	16	printk(level "GFS2: fsid=%s: " fmt , (fs)->sd_fsname , ## arg)
	17
	18	#define fs_info(fs, fmt, arg...) \
	19	fs_printk(KERN_INFO , fs , fmt , ## arg)
	20
	21	#define fs_warn(fs, fmt, arg...) \
	22	fs_printk(KERN_WARNING , fs , fmt , ## arg)
	23
	24	#define fs_err(fs, fmt, arg...) \
	25	fs_printk(KERN_ERR, fs , fmt , ## arg)
	26
	27
	28	void gfs2_assert_i(struct gfs2_sbd *sdp);
	29
	30	#define gfs2_assert(sdp, assertion) \
	31	do { \
	32	if (unlikely(!(assertion))) { \
	33	gfs2_assert_i(sdp); \
1e09ae54	34	BUG(); \
b3b94faa DT	35	} \
	36	} while (0)
	37
	38
	39	int gfs2_assert_withdraw_i(struct gfs2_sbd sdp, char assertion,
	40	const char function, char file, unsigned int line);
	41
	42	#define gfs2_assert_withdraw(sdp, assertion) \
	43	((likely(assertion)) ? 0 : gfs2_assert_withdraw_i((sdp), #assertion, \
8e24eea7	44	__func__, __FILE__, __LINE__))
b3b94faa DT	45
	46
	47	int gfs2_assert_warn_i(struct gfs2_sbd sdp, char assertion,
	48	const char function, char file, unsigned int line);
	49
	50	#define gfs2_assert_warn(sdp, assertion) \
	51	((likely(assertion)) ? 0 : gfs2_assert_warn_i((sdp), #assertion, \
8e24eea7	52	__func__, __FILE__, __LINE__))
b3b94faa DT	53
	54
	55	int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide,
	56	const char function, char file, unsigned int line);
	57
	58	#define gfs2_consist(sdp) \
8e24eea7	59	gfs2_consist_i((sdp), 0, __func__, __FILE__, __LINE__)
b3b94faa DT	60
	61
	62	int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide,
	63	const char function, char file, unsigned int line);
	64
	65	#define gfs2_consist_inode(ip) \
8e24eea7	66	gfs2_consist_inode_i((ip), 0, __func__, __FILE__, __LINE__)
b3b94faa DT	67
	68
	69	int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide,
	70	const char function, char file, unsigned int line);
	71
	72	#define gfs2_consist_rgrpd(rgd) \
8e24eea7	73	gfs2_consist_rgrpd_i((rgd), 0, __func__, __FILE__, __LINE__)
b3b94faa DT	74
	75
	76	int gfs2_meta_check_ii(struct gfs2_sbd sdp, struct buffer_head bh,
	77	const char type, const char function,
	78	char *file, unsigned int line);
	79
	80	static inline int gfs2_meta_check_i(struct gfs2_sbd *sdp,
	81	struct buffer_head *bh,
	82	const char *function,
	83	char *file, unsigned int line)
	84	{
	85	struct gfs2_meta_header mh = (struct gfs2_meta_header )bh->b_data;
b44b84d7	86	u32 magic = be32_to_cpu(mh->mh_magic);
b3b94faa DT	87	if (unlikely(magic != GFS2_MAGIC))
	88	return gfs2_meta_check_ii(sdp, bh, "magic number", function,
	89	file, line);
	90	return 0;
	91	}
	92
	93	#define gfs2_meta_check(sdp, bh) \
8e24eea7	94	gfs2_meta_check_i((sdp), (bh), __func__, __FILE__, __LINE__)
b3b94faa DT	95
	96
	97	int gfs2_metatype_check_ii(struct gfs2_sbd sdp, struct buffer_head bh,
cd915493	98	u16 type, u16 t,
b3b94faa DT	99	const char *function,
	100	char *file, unsigned int line);
	101
	102	static inline int gfs2_metatype_check_i(struct gfs2_sbd *sdp,
	103	struct buffer_head *bh,
cd915493	104	u16 type,
b3b94faa DT	105	const char *function,
	106	char *file, unsigned int line)
	107	{
	108	struct gfs2_meta_header mh = (struct gfs2_meta_header )bh->b_data;
b44b84d7	109	u32 magic = be32_to_cpu(mh->mh_magic);
cd915493	110	u16 t = be32_to_cpu(mh->mh_type);
b3b94faa DT	111	if (unlikely(magic != GFS2_MAGIC))
	112	return gfs2_meta_check_ii(sdp, bh, "magic number", function,
	113	file, line);
b3b94faa DT	114	if (unlikely(t != type))
	115	return gfs2_metatype_check_ii(sdp, bh, type, t, function,
	116	file, line);
	117	return 0;
	118	}
	119
	120	#define gfs2_metatype_check(sdp, bh, type) \
8e24eea7	121	gfs2_metatype_check_i((sdp), (bh), (type), __func__, __FILE__, __LINE__)
b3b94faa	122
cd915493 SW	123	static inline void gfs2_metatype_set(struct buffer_head *bh, u16 type,
cd915493 SW	124	u16 format)
b3b94faa DT	125	{
	126	struct gfs2_meta_header *mh;
	127	mh = (struct gfs2_meta_header *)bh->b_data;
e3167ded SW	128	mh->mh_type = cpu_to_be32(type);
e3167ded SW	129	mh->mh_format = cpu_to_be32(format);
b3b94faa DT	130	}
	131
	132
	133	int gfs2_io_error_i(struct gfs2_sbd sdp, const char function,
	134	char *file, unsigned int line);
	135
	136	#define gfs2_io_error(sdp) \
8e24eea7	137	gfs2_io_error_i((sdp), __func__, __FILE__, __LINE__);
b3b94faa DT	138
	139
	140	int gfs2_io_error_bh_i(struct gfs2_sbd sdp, struct buffer_head bh,
	141	const char function, char file, unsigned int line);
	142
	143	#define gfs2_io_error_bh(sdp, bh) \
8e24eea7	144	gfs2_io_error_bh_i((sdp), (bh), __func__, __FILE__, __LINE__);
b3b94faa DT	145
b3b94faa DT	146
e18b890b	147	extern struct kmem_cache *gfs2_glock_cachep;
009d8518	148	extern struct kmem_cache *gfs2_glock_aspace_cachep;
e18b890b CL	149	extern struct kmem_cache *gfs2_inode_cachep;
e18b890b CL	150	extern struct kmem_cache *gfs2_bufdata_cachep;
6bdd9be6	151	extern struct kmem_cache *gfs2_rgrpd_cachep;
37b2c837	152	extern struct kmem_cache *gfs2_quotad_cachep;
b3b94faa	153
b3b94faa DT	154	static inline unsigned int gfs2_tune_get_i(struct gfs2_tune *gt,
	155	unsigned int *p)
	156	{
	157	unsigned int x;
	158	spin_lock(&gt->gt_spin);
	159	x = *p;
	160	spin_unlock(&gt->gt_spin);
	161	return x;
	162	}
	163
	164	#define gfs2_tune_get(sdp, field) \
	165	gfs2_tune_get_i(&(sdp)->sd_tune, &(sdp)->sd_tune.field)
	166
	167	void gfs2_icbit_munge(struct gfs2_sbd sdp, unsigned char *bitmap,
	168	unsigned int bit, int new_value);
da755fdb	169	int gfs2_lm_withdraw(struct gfs2_sbd sdp, char fmt, ...);
b3b94faa DT	170
	171	#endif /* __UTIL_DOT_H__ */
	172