fs/affs/affs.h - kernel/msm-4.19 - Gitiles

 #include <linux/types.h>
 #include <linux/fs.h>
 #include <linux/buffer_head.h>
 #include <linux/amigaffs.h>
 #include <linux/mutex.h>

 /* AmigaOS allows file names with up to 30 characters length.
  * Names longer than that will be silently truncated. If you
  * want to disallow this, comment out the following #define.
  * Creating filesystem objects with longer names will then
  * result in an error (ENAMETOOLONG).
  */
 /*#define AFFS_NO_TRUNCATE */

 /* Ugly macros make the code more pretty. */

 #define GET_END_PTR(st,p,sz)		 ((st *)((char *)(p)+((sz)-sizeof(st))))
 #define AFFS_GET_HASHENTRY(data,hashkey) be32_to_cpu(((struct dir_front *)data)->hashtable[hashkey])
 #define AFFS_BLOCK(sb, bh, blk)		(AFFS_HEAD(bh)->table[AFFS_SB(sb)->s_hashsize-1-(blk)])

 #define AFFS_HEAD(bh)		((struct affs_head *)(bh)->b_data)
 #define AFFS_TAIL(sb, bh)	((struct affs_tail *)((bh)->b_data+(sb)->s_blocksize-sizeof(struct affs_tail)))
 #define AFFS_ROOT_HEAD(bh)	((struct affs_root_head *)(bh)->b_data)
 #define AFFS_ROOT_TAIL(sb, bh)	((struct affs_root_tail *)((bh)->b_data+(sb)->s_blocksize-sizeof(struct affs_root_tail)))
 #define AFFS_DATA_HEAD(bh)	((struct affs_data_head *)(bh)->b_data)
 #define AFFS_DATA(bh)		(((struct affs_data_head *)(bh)->b_data)->data)

 #define AFFS_CACHE_SIZE		PAGE_SIZE

 #define AFFS_MAX_PREALLOC	32
 #define AFFS_LC_SIZE		(AFFS_CACHE_SIZE/sizeof(u32)/2)
 #define AFFS_AC_SIZE		(AFFS_CACHE_SIZE/sizeof(struct affs_ext_key)/2)
 #define AFFS_AC_MASK		(AFFS_AC_SIZE-1)

 struct affs_ext_key {
 	u32	ext;				/* idx of the extended block */
 	u32	key;				/* block number */
 };

 /*
  * affs fs inode data in memory
  */
 struct affs_inode_info {
 	atomic_t i_opencnt;
 	struct semaphore i_link_lock;		/* Protects internal inode access. */
 	struct semaphore i_ext_lock;		/* Protects internal inode access. */
 #define i_hash_lock i_ext_lock
 	u32	 i_blkcnt;			/* block count */
 	u32	 i_extcnt;			/* extended block count */
 	u32	*i_lc;				/* linear cache of extended blocks */
 	u32	 i_lc_size;
 	u32	 i_lc_shift;
 	u32	 i_lc_mask;
 	struct affs_ext_key *i_ac;		/* associative cache of extended blocks */
 	u32	 i_ext_last;			/* last accessed extended block */
 	struct buffer_head *i_ext_bh;		/* bh of last extended block */
 	loff_t	 mmu_private;
 	u32	 i_protect;			/* unused attribute bits */
 	u32	 i_lastalloc;			/* last allocated block */
 	int	 i_pa_cnt;			/* number of preallocated blocks */
 	struct inode vfs_inode;
 };

 /* short cut to get to the affs specific inode data */
 static inline struct affs_inode_info *AFFS_I(struct inode *inode)
 {
 	return list_entry(inode, struct affs_inode_info, vfs_inode);
 }

 /*
  * super-block data in memory
  *
  * Block numbers are adjusted for their actual size
  *
  */

 struct affs_bm_info {
 	u32 bm_key;			/* Disk block number */
 	u32 bm_free;			/* Free blocks in here */
 };

 struct affs_sb_info {
 	int s_partition_size;		/* Partition size in blocks. */
 	int s_reserved;			/* Number of reserved blocks. */
 	//u32 s_blksize;			/* Initial device blksize */
 	u32 s_data_blksize;		/* size of the data block w/o header */
 	u32 s_root_block;		/* FFS root block number. */
 	int s_hashsize;			/* Size of hash table. */
 	unsigned long s_flags;		/* See below. */
 	uid_t s_uid;			/* uid to override */
 	gid_t s_gid;			/* gid to override */
 	umode_t s_mode;			/* mode to override */
 	struct buffer_head *s_root_bh;	/* Cached root block. */
 	struct mutex s_bmlock;		/* Protects bitmap access. */
 	struct affs_bm_info *s_bitmap;	/* Bitmap infos. */
 	u32 s_bmap_count;		/* # of bitmap blocks. */
 	u32 s_bmap_bits;		/* # of bits in one bitmap blocks */
 	u32 s_last_bmap;
 	struct buffer_head *s_bmap_bh;
 	char *s_prefix;			/* Prefix for volumes and assigns. */
 	char s_volume[32];		/* Volume prefix for absolute symlinks. */
 	spinlock_t symlink_lock;	/* protects the previous two */
 };

 #define SF_INTL		0x0001		/* International filesystem. */
 #define SF_BM_VALID	0x0002		/* Bitmap is valid. */
 #define SF_IMMUTABLE	0x0004		/* Protection bits cannot be changed */
 #define SF_QUIET	0x0008		/* chmod errors will be not reported */
 #define SF_SETUID	0x0010		/* Ignore Amiga uid */
 #define SF_SETGID	0x0020		/* Ignore Amiga gid */
 #define SF_SETMODE	0x0040		/* Ignore Amiga protection bits */
 #define SF_MUFS		0x0100		/* Use MUFS uid/gid mapping */
 #define SF_OFS		0x0200		/* Old filesystem */
 #define SF_PREFIX	0x0400		/* Buffer for prefix is allocated */
 #define SF_VERBOSE	0x0800		/* Talk about fs when mounting */

 /* short cut to get to the affs specific sb data */
 static inline struct affs_sb_info *AFFS_SB(struct super_block *sb)
 {
 	return sb->s_fs_info;
 }

 /* amigaffs.c */

 extern int	affs_insert_hash(struct inode *inode, struct buffer_head *bh);
 extern int	affs_remove_hash(struct inode *dir, struct buffer_head *rem_bh);
 extern int	affs_remove_header(struct dentry *dentry);
 extern u32	affs_checksum_block(struct super_block *sb, struct buffer_head *bh);
 extern void	affs_fix_checksum(struct super_block *sb, struct buffer_head *bh);
 extern void	secs_to_datestamp(time_t secs, struct affs_date *ds);
 extern umode_t	prot_to_mode(u32 prot);
 extern void	mode_to_prot(struct inode *inode);
 extern void	affs_error(struct super_block *sb, const char *function, const char *fmt, ...);
 extern void	affs_warning(struct super_block *sb, const char *function, const char *fmt, ...);
 extern int	affs_check_name(const unsigned char *name, int len);
 extern int	affs_copy_name(unsigned char *bstr, struct dentry *dentry);

 /* bitmap. c */

 extern u32	affs_count_free_blocks(struct super_block *s);
 extern void	affs_free_block(struct super_block *sb, u32 block);
 extern u32	affs_alloc_block(struct inode *inode, u32 goal);
 extern int	affs_init_bitmap(struct super_block *sb, int *flags);
 extern void	affs_free_bitmap(struct super_block *sb);

 /* namei.c */

 extern int	affs_hash_name(struct super_block *sb, const u8 *name, unsigned int len);
 extern struct dentry *affs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *);
 extern int	affs_unlink(struct inode *dir, struct dentry *dentry);
 extern int	affs_create(struct inode *dir, struct dentry *dentry, umode_t mode, struct nameidata *);
 extern int	affs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
 extern int	affs_rmdir(struct inode *dir, struct dentry *dentry);
 extern int	affs_link(struct dentry *olddentry, struct inode *dir,
 			  struct dentry *dentry);
 extern int	affs_symlink(struct inode *dir, struct dentry *dentry,
 			     const char *symname);
 extern int	affs_rename(struct inode *old_dir, struct dentry *old_dentry,
 			    struct inode *new_dir, struct dentry *new_dentry);

 /* inode.c */

 extern unsigned long		 affs_parent_ino(struct inode *dir);
 extern struct inode		*affs_new_inode(struct inode *dir);
 extern int			 affs_notify_change(struct dentry *dentry, struct iattr *attr);
 extern void			 affs_evict_inode(struct inode *inode);
 extern struct inode		*affs_iget(struct super_block *sb,
 					unsigned long ino);
 extern int			 affs_write_inode(struct inode *inode,
 					struct writeback_control *wbc);
 extern int			 affs_add_entry(struct inode *dir, struct inode *inode, struct dentry *dentry, s32 type);

 /* file.c */

 void		affs_free_prealloc(struct inode *inode);
 extern void	affs_truncate(struct inode *);
 int		affs_file_fsync(struct file *, loff_t, loff_t, int);

 /* dir.c */

 extern void   affs_dir_truncate(struct inode *);

 /* jump tables */

 extern const struct inode_operations	 affs_file_inode_operations;
 extern const struct inode_operations	 affs_dir_inode_operations;
 extern const struct inode_operations   affs_symlink_inode_operations;
 extern const struct file_operations	 affs_file_operations;
 extern const struct file_operations	 affs_file_operations_ofs;
 extern const struct file_operations	 affs_dir_operations;
 extern const struct address_space_operations	 affs_symlink_aops;
 extern const struct address_space_operations	 affs_aops;
 extern const struct address_space_operations	 affs_aops_ofs;

 extern const struct dentry_operations	 affs_dentry_operations;
 extern const struct dentry_operations	 affs_intl_dentry_operations;

 static inline void
 affs_set_blocksize(struct super_block *sb, int size)
 {
 	sb_set_blocksize(sb, size);
 }
 static inline struct buffer_head *
 affs_bread(struct super_block *sb, int block)
 {
 	pr_debug("affs_bread: %d\n", block);
 	if (block >= AFFS_SB(sb)->s_reserved && block < AFFS_SB(sb)->s_partition_size)
 		return sb_bread(sb, block);
 	return NULL;
 }
 static inline struct buffer_head *
 affs_getblk(struct super_block *sb, int block)
 {
 	pr_debug("affs_getblk: %d\n", block);
 	if (block >= AFFS_SB(sb)->s_reserved && block < AFFS_SB(sb)->s_partition_size)
 		return sb_getblk(sb, block);
 	return NULL;
 }
 static inline struct buffer_head *
 affs_getzeroblk(struct super_block *sb, int block)
 {
 	struct buffer_head *bh;
 	pr_debug("affs_getzeroblk: %d\n", block);
 	if (block >= AFFS_SB(sb)->s_reserved && block < AFFS_SB(sb)->s_partition_size) {
 		bh = sb_getblk(sb, block);
 		lock_buffer(bh);
 		memset(bh->b_data, 0 , sb->s_blocksize);
 		set_buffer_uptodate(bh);
 		unlock_buffer(bh);
 		return bh;
 	}
 	return NULL;
 }
 static inline struct buffer_head *
 affs_getemptyblk(struct super_block *sb, int block)
 {
 	struct buffer_head *bh;
 	pr_debug("affs_getemptyblk: %d\n", block);
 	if (block >= AFFS_SB(sb)->s_reserved && block < AFFS_SB(sb)->s_partition_size) {
 		bh = sb_getblk(sb, block);
 		wait_on_buffer(bh);
 		set_buffer_uptodate(bh);
 		return bh;
 	}
 	return NULL;
 }
 static inline void
 affs_brelse(struct buffer_head *bh)
 {
 	if (bh)
 		pr_debug("affs_brelse: %lld\n", (long long) bh->b_blocknr);
 	brelse(bh);
 }

 static inline void
 affs_adjust_checksum(struct buffer_head *bh, u32 val)
 {
 	u32 tmp = be32_to_cpu(((__be32 *)bh->b_data)[5]);
 	((__be32 *)bh->b_data)[5] = cpu_to_be32(tmp - val);
 }
 static inline void
 affs_adjust_bitmapchecksum(struct buffer_head *bh, u32 val)
 {
 	u32 tmp = be32_to_cpu(((__be32 *)bh->b_data)[0]);
 	((__be32 *)bh->b_data)[0] = cpu_to_be32(tmp - val);
 }

 static inline void
 affs_lock_link(struct inode *inode)
 {
 	down(&AFFS_I(inode)->i_link_lock);
 }
 static inline void
 affs_unlock_link(struct inode *inode)
 {
 	up(&AFFS_I(inode)->i_link_lock);
 }
 static inline void
 affs_lock_dir(struct inode *inode)
 {
 	down(&AFFS_I(inode)->i_hash_lock);
 }
 static inline void
 affs_unlock_dir(struct inode *inode)
 {
 	up(&AFFS_I(inode)->i_hash_lock);
 }
 static inline void
 affs_lock_ext(struct inode *inode)
 {
 	down(&AFFS_I(inode)->i_ext_lock);
 }
 static inline void
 affs_unlock_ext(struct inode *inode)
 {
 	up(&AFFS_I(inode)->i_ext_lock);
 }
	#include <linux/types.h>
	#include <linux/fs.h>
	#include <linux/buffer_head.h>
	#include <linux/amigaffs.h>
	#include <linux/mutex.h>

	/* AmigaOS allows file names with up to 30 characters length.
	* Names longer than that will be silently truncated. If you
	* want to disallow this, comment out the following #define.
	* Creating filesystem objects with longer names will then
	* result in an error (ENAMETOOLONG).
	*/
	/#define AFFS_NO_TRUNCATE /

	/* Ugly macros make the code more pretty. */

	#define GET_END_PTR(st,p,sz) ((st )((char )(p)+((sz)-sizeof(st))))
	#define AFFS_GET_HASHENTRY(data,hashkey) be32_to_cpu(((struct dir_front *)data)->hashtable[hashkey])
	#define AFFS_BLOCK(sb, bh, blk) (AFFS_HEAD(bh)->table[AFFS_SB(sb)->s_hashsize-1-(blk)])

	#define AFFS_HEAD(bh) ((struct affs_head *)(bh)->b_data)
	#define AFFS_TAIL(sb, bh) ((struct affs_tail *)((bh)->b_data+(sb)->s_blocksize-sizeof(struct affs_tail)))
	#define AFFS_ROOT_HEAD(bh) ((struct affs_root_head *)(bh)->b_data)
	#define AFFS_ROOT_TAIL(sb, bh) ((struct affs_root_tail *)((bh)->b_data+(sb)->s_blocksize-sizeof(struct affs_root_tail)))
	#define AFFS_DATA_HEAD(bh) ((struct affs_data_head *)(bh)->b_data)
	#define AFFS_DATA(bh) (((struct affs_data_head *)(bh)->b_data)->data)

	#define AFFS_CACHE_SIZE PAGE_SIZE

	#define AFFS_MAX_PREALLOC 32
	#define AFFS_LC_SIZE (AFFS_CACHE_SIZE/sizeof(u32)/2)
	#define AFFS_AC_SIZE (AFFS_CACHE_SIZE/sizeof(struct affs_ext_key)/2)
	#define AFFS_AC_MASK (AFFS_AC_SIZE-1)

	struct affs_ext_key {
	u32 ext; /* idx of the extended block */
	u32 key; /* block number */
	};

	/*
	* affs fs inode data in memory
	*/
	struct affs_inode_info {
	atomic_t i_opencnt;
	struct semaphore i_link_lock; /* Protects internal inode access. */
	struct semaphore i_ext_lock; /* Protects internal inode access. */
	#define i_hash_lock i_ext_lock
	u32 i_blkcnt; /* block count */
	u32 i_extcnt; /* extended block count */
	u32 i_lc; / linear cache of extended blocks */
	u32 i_lc_size;
	u32 i_lc_shift;
	u32 i_lc_mask;
	struct affs_ext_key i_ac; / associative cache of extended blocks */
	u32 i_ext_last; /* last accessed extended block */
	struct buffer_head i_ext_bh; / bh of last extended block */
	loff_t mmu_private;
	u32 i_protect; /* unused attribute bits */
	u32 i_lastalloc; /* last allocated block */
	int i_pa_cnt; /* number of preallocated blocks */
	struct inode vfs_inode;
	};

	/* short cut to get to the affs specific inode data */
	static inline struct affs_inode_info AFFS_I(struct inode inode)
	{
	return list_entry(inode, struct affs_inode_info, vfs_inode);
	}

	/*
	* super-block data in memory
	*
	* Block numbers are adjusted for their actual size
	*
	*/

	struct affs_bm_info {
	u32 bm_key; /* Disk block number */
	u32 bm_free; /* Free blocks in here */
	};

	struct affs_sb_info {
	int s_partition_size; /* Partition size in blocks. */
	int s_reserved; /* Number of reserved blocks. */
	//u32 s_blksize; /* Initial device blksize */
	u32 s_data_blksize; /* size of the data block w/o header */
	u32 s_root_block; /* FFS root block number. */
	int s_hashsize; /* Size of hash table. */
	unsigned long s_flags; /* See below. */
	uid_t s_uid; /* uid to override */
	gid_t s_gid; /* gid to override */
	umode_t s_mode; /* mode to override */
	struct buffer_head s_root_bh; / Cached root block. */
	struct mutex s_bmlock; /* Protects bitmap access. */
	struct affs_bm_info s_bitmap; / Bitmap infos. */
	u32 s_bmap_count; /* # of bitmap blocks. */
	u32 s_bmap_bits; /* # of bits in one bitmap blocks */
	u32 s_last_bmap;
	struct buffer_head *s_bmap_bh;
	char s_prefix; / Prefix for volumes and assigns. */
	char s_volume[32]; /* Volume prefix for absolute symlinks. */
	spinlock_t symlink_lock; /* protects the previous two */
	};

	#define SF_INTL 0x0001 /* International filesystem. */
	#define SF_BM_VALID 0x0002 /* Bitmap is valid. */
	#define SF_IMMUTABLE 0x0004 /* Protection bits cannot be changed */
	#define SF_QUIET 0x0008 /* chmod errors will be not reported */
	#define SF_SETUID 0x0010 /* Ignore Amiga uid */
	#define SF_SETGID 0x0020 /* Ignore Amiga gid */
	#define SF_SETMODE 0x0040 /* Ignore Amiga protection bits */
	#define SF_MUFS 0x0100 /* Use MUFS uid/gid mapping */
	#define SF_OFS 0x0200 /* Old filesystem */
	#define SF_PREFIX 0x0400 /* Buffer for prefix is allocated */
	#define SF_VERBOSE 0x0800 /* Talk about fs when mounting */

	/* short cut to get to the affs specific sb data */
	static inline struct affs_sb_info AFFS_SB(struct super_block sb)
	{
	return sb->s_fs_info;
	}

	/* amigaffs.c */

	extern int affs_insert_hash(struct inode inode, struct buffer_head bh);
	extern int affs_remove_hash(struct inode dir, struct buffer_head rem_bh);
	extern int affs_remove_header(struct dentry *dentry);
	extern u32 affs_checksum_block(struct super_block sb, struct buffer_head bh);
	extern void affs_fix_checksum(struct super_block sb, struct buffer_head bh);
	extern void secs_to_datestamp(time_t secs, struct affs_date *ds);
	extern umode_t prot_to_mode(u32 prot);
	extern void mode_to_prot(struct inode *inode);
	extern void affs_error(struct super_block sb, const char function, const char *fmt, ...);
	extern void affs_warning(struct super_block sb, const char function, const char *fmt, ...);
	extern int affs_check_name(const unsigned char *name, int len);
	extern int affs_copy_name(unsigned char bstr, struct dentry dentry);

	/* bitmap. c */

	extern u32 affs_count_free_blocks(struct super_block *s);
	extern void affs_free_block(struct super_block *sb, u32 block);
	extern u32 affs_alloc_block(struct inode *inode, u32 goal);
	extern int affs_init_bitmap(struct super_block sb, int flags);
	extern void affs_free_bitmap(struct super_block *sb);

	/* namei.c */

	extern int affs_hash_name(struct super_block sb, const u8 name, unsigned int len);
	extern struct dentry affs_lookup(struct inode dir, struct dentry dentry, struct nameidata );
	extern int affs_unlink(struct inode dir, struct dentry dentry);
	extern int affs_create(struct inode dir, struct dentry dentry, umode_t mode, struct nameidata *);
	extern int affs_mkdir(struct inode dir, struct dentry dentry, umode_t mode);
	extern int affs_rmdir(struct inode dir, struct dentry dentry);
	extern int affs_link(struct dentry olddentry, struct inode dir,
	struct dentry *dentry);
	extern int affs_symlink(struct inode dir, struct dentry dentry,
	const char *symname);
	extern int affs_rename(struct inode old_dir, struct dentry old_dentry,
	struct inode new_dir, struct dentry new_dentry);

	/* inode.c */

	extern unsigned long affs_parent_ino(struct inode *dir);
	extern struct inode affs_new_inode(struct inode dir);
	extern int affs_notify_change(struct dentry dentry, struct iattr attr);
	extern void affs_evict_inode(struct inode *inode);
	extern struct inode affs_iget(struct super_block sb,
	unsigned long ino);
	extern int affs_write_inode(struct inode *inode,
	struct writeback_control *wbc);
	extern int affs_add_entry(struct inode dir, struct inode inode, struct dentry *dentry, s32 type);

	/* file.c */

	void affs_free_prealloc(struct inode *inode);
	extern void affs_truncate(struct inode *);
	int affs_file_fsync(struct file *, loff_t, loff_t, int);

	/* dir.c */

	extern void affs_dir_truncate(struct inode *);

	/* jump tables */

	extern const struct inode_operations affs_file_inode_operations;
	extern const struct inode_operations affs_dir_inode_operations;
	extern const struct inode_operations affs_symlink_inode_operations;
	extern const struct file_operations affs_file_operations;
	extern const struct file_operations affs_file_operations_ofs;
	extern const struct file_operations affs_dir_operations;
	extern const struct address_space_operations affs_symlink_aops;
	extern const struct address_space_operations affs_aops;
	extern const struct address_space_operations affs_aops_ofs;

	extern const struct dentry_operations affs_dentry_operations;
	extern const struct dentry_operations affs_intl_dentry_operations;

	static inline void
	affs_set_blocksize(struct super_block *sb, int size)
	{
	sb_set_blocksize(sb, size);
	}
	static inline struct buffer_head *
	affs_bread(struct super_block *sb, int block)
	{
	pr_debug("affs_bread: %d\n", block);
	if (block >= AFFS_SB(sb)->s_reserved && block < AFFS_SB(sb)->s_partition_size)
	return sb_bread(sb, block);
	return NULL;
	}
	static inline struct buffer_head *
	affs_getblk(struct super_block *sb, int block)
	{
	pr_debug("affs_getblk: %d\n", block);
	if (block >= AFFS_SB(sb)->s_reserved && block < AFFS_SB(sb)->s_partition_size)
	return sb_getblk(sb, block);
	return NULL;
	}
	static inline struct buffer_head *
	affs_getzeroblk(struct super_block *sb, int block)
	{
	struct buffer_head *bh;
	pr_debug("affs_getzeroblk: %d\n", block);
	if (block >= AFFS_SB(sb)->s_reserved && block < AFFS_SB(sb)->s_partition_size) {
	bh = sb_getblk(sb, block);
	lock_buffer(bh);
	memset(bh->b_data, 0 , sb->s_blocksize);
	set_buffer_uptodate(bh);
	unlock_buffer(bh);
	return bh;
	}
	return NULL;
	}
	static inline struct buffer_head *
	affs_getemptyblk(struct super_block *sb, int block)
	{
	struct buffer_head *bh;
	pr_debug("affs_getemptyblk: %d\n", block);
	if (block >= AFFS_SB(sb)->s_reserved && block < AFFS_SB(sb)->s_partition_size) {
	bh = sb_getblk(sb, block);
	wait_on_buffer(bh);
	set_buffer_uptodate(bh);
	return bh;
	}
	return NULL;
	}
	static inline void
	affs_brelse(struct buffer_head *bh)
	{
	if (bh)
	pr_debug("affs_brelse: %lld\n", (long long) bh->b_blocknr);
	brelse(bh);
	}

	static inline void
	affs_adjust_checksum(struct buffer_head *bh, u32 val)
	{
	u32 tmp = be32_to_cpu(((__be32 *)bh->b_data)[5]);
	((__be32 *)bh->b_data)[5] = cpu_to_be32(tmp - val);
	}
	static inline void
	affs_adjust_bitmapchecksum(struct buffer_head *bh, u32 val)
	{
	u32 tmp = be32_to_cpu(((__be32 *)bh->b_data)[0]);
	((__be32 *)bh->b_data)[0] = cpu_to_be32(tmp - val);
	}

	static inline void
	affs_lock_link(struct inode *inode)
	{
	down(&AFFS_I(inode)->i_link_lock);
	}
	static inline void
	affs_unlock_link(struct inode *inode)
	{
	up(&AFFS_I(inode)->i_link_lock);
	}
	static inline void
	affs_lock_dir(struct inode *inode)
	{
	down(&AFFS_I(inode)->i_hash_lock);
	}
	static inline void
	affs_unlock_dir(struct inode *inode)
	{
	up(&AFFS_I(inode)->i_hash_lock);
	}
	static inline void
	affs_lock_ext(struct inode *inode)
	{
	down(&AFFS_I(inode)->i_ext_lock);
	}
	static inline void
	affs_unlock_ext(struct inode *inode)
	{
	up(&AFFS_I(inode)->i_ext_lock);
	}