48 typedef void (bh_end_io_t)(struct buffer_head *bh, int uptodate);
82 static inline void set_buffer_##name(struct buffer_head *bh)		\
84 	set_bit(BH_##bit, &(bh)->b_state);				\
86 static inline void clear_buffer_##name(struct buffer_head *bh)		\
88 	clear_bit(BH_##bit, &(bh)->b_state);				\
90 static inline int buffer_##name(const struct buffer_head *bh)		\
92 	return test_bit(BH_##bit, &(bh)->b_state);			\
99 static inline int test_set_buffer_##name(struct buffer_head *bh)	\
101 	return test_and_set_bit(BH_##bit, &(bh)->b_state);		\
103 static inline int test_clear_buffer_##name(struct buffer_head *bh)	\
105 	return test_and_clear_bit(BH_##bit, &(bh)->b_state);		\
128 #define bh_offset(bh)		((unsigned long)(bh)->b_data & ~PAGE_MASK)  argument
129 #define touch_buffer(bh)	mark_page_accessed(bh->b_page)  argument
143 void mark_buffer_dirty(struct buffer_head *bh);
145 void set_bh_page(struct buffer_head *bh,
152 void end_buffer_read_sync(struct buffer_head *bh, int uptodate);
153 void end_buffer_write_sync(struct buffer_head *bh, int uptodate);
154 void end_buffer_async_write(struct buffer_head *bh, int uptodate);
157 void mark_buffer_dirty_inode(struct buffer_head *bh, struct inode *inode);
164 void mark_buffer_async_write(struct buffer_head *bh);
166 wait_queue_head_t *bh_waitq_head(struct buffer_head *bh);
177 void free_buffer_head(struct buffer_head * bh);
178 void unlock_buffer(struct buffer_head *bh);
179 void __lock_buffer(struct buffer_head *bh);
180 void ll_rw_block(int, int, struct buffer_head * bh[]);
181 int sync_dirty_buffer(struct buffer_head *bh);
182 int __sync_dirty_buffer(struct buffer_head *bh, int rw);
183 void write_dirty_buffer(struct buffer_head *bh, int rw);
187 int bh_uptodate_or_lock(struct buffer_head *bh);
188 int bh_submit_read(struct buffer_head *bh);
263 static inline void get_bh(struct buffer_head *bh)  in get_bh()  argument
265         atomic_inc(&bh->b_count);  in get_bh()
268 static inline void put_bh(struct buffer_head *bh)  in put_bh()  argument
271         atomic_dec(&bh->b_count);  in put_bh()
274 static inline void brelse(struct buffer_head *bh)  in brelse()  argument
276 	if (bh)  in brelse()
277 		__brelse(bh);  in brelse()
280 static inline void bforget(struct buffer_head *bh)  in bforget()  argument
282 	if (bh)  in bforget()
283 		__bforget(bh);  in bforget()
311 map_bh(struct buffer_head *bh, struct super_block *sb, sector_t block)  in map_bh()  argument
313 	set_buffer_mapped(bh);  in map_bh()
314 	bh->b_bdev = sb->s_bdev;  in map_bh()
315 	bh->b_blocknr = block;  in map_bh()
316 	bh->b_size = sb->s_blocksize;  in map_bh()
319 static inline void wait_on_buffer(struct buffer_head *bh)  in wait_on_buffer()  argument
322 	if (buffer_locked(bh))  in wait_on_buffer()
323 		__wait_on_buffer(bh);  in wait_on_buffer()
326 static inline int trylock_buffer(struct buffer_head *bh)  in trylock_buffer()  argument
328 	return likely(!test_and_set_bit_lock(BH_Lock, &bh->b_state));  in trylock_buffer()
331 static inline void lock_buffer(struct buffer_head *bh)  in lock_buffer()  argument
334 	if (!trylock_buffer(bh))  in lock_buffer()
335 		__lock_buffer(bh);  in lock_buffer()