51 typedef void (bh_end_io_t)(struct buffer_head *bh, int uptodate);
85 static inline void set_buffer_##name(struct buffer_head *bh)		\
87 	set_bit(BH_##bit, &(bh)->b_state);				\
89 static inline void clear_buffer_##name(struct buffer_head *bh)		\
91 	clear_bit(BH_##bit, &(bh)->b_state);				\
93 static inline int buffer_##name(const struct buffer_head *bh)		\
95 	return test_bit(BH_##bit, &(bh)->b_state);			\
102 static inline int test_set_buffer_##name(struct buffer_head *bh)	\
104 	return test_and_set_bit(BH_##bit, &(bh)->b_state);		\
106 static inline int test_clear_buffer_##name(struct buffer_head *bh)	\
108 	return test_and_clear_bit(BH_##bit, &(bh)->b_state);		\
134 #define bh_offset(bh)		((unsigned long)(bh)->b_data & ~PAGE_MASK)  argument
151 void mark_buffer_dirty(struct buffer_head *bh);
153 void touch_buffer(struct buffer_head *bh);
154 void set_bh_page(struct buffer_head *bh,
161 void end_buffer_read_sync(struct buffer_head *bh, int uptodate);
162 void end_buffer_write_sync(struct buffer_head *bh, int uptodate);
163 void end_buffer_async_write(struct buffer_head *bh, int uptodate);
166 void mark_buffer_dirty_inode(struct buffer_head *bh, struct inode *inode);
173 void mark_buffer_async_write(struct buffer_head *bh);
175 wait_queue_head_t *bh_waitq_head(struct buffer_head *bh);
187 void free_buffer_head(struct buffer_head * bh);
188 void unlock_buffer(struct buffer_head *bh);
189 void __lock_buffer(struct buffer_head *bh);
190 void ll_rw_block(int, int, struct buffer_head * bh[]);
191 int sync_dirty_buffer(struct buffer_head *bh);
192 int __sync_dirty_buffer(struct buffer_head *bh, int rw);
193 void write_dirty_buffer(struct buffer_head *bh, int rw);
194 int _submit_bh(int rw, struct buffer_head *bh, unsigned long bio_flags);
198 int bh_uptodate_or_lock(struct buffer_head *bh);
199 int bh_submit_read(struct buffer_head *bh);
273 static inline void get_bh(struct buffer_head *bh)  in get_bh()  argument
275         atomic_inc(&bh->b_count);  in get_bh()
278 static inline void put_bh(struct buffer_head *bh)  in put_bh()  argument
281         atomic_dec(&bh->b_count);  in put_bh()
284 static inline void brelse(struct buffer_head *bh)  in brelse()  argument
286 	if (bh)  in brelse()
287 		__brelse(bh);  in brelse()
290 static inline void bforget(struct buffer_head *bh)  in bforget()  argument
292 	if (bh)  in bforget()
293 		__bforget(bh);  in bforget()
334 map_bh(struct buffer_head *bh, struct super_block *sb, sector_t block)  in map_bh()  argument
336 	set_buffer_mapped(bh);  in map_bh()
337 	bh->b_bdev = sb->s_bdev;  in map_bh()
338 	bh->b_blocknr = block;  in map_bh()
339 	bh->b_size = sb->s_blocksize;  in map_bh()
342 static inline void wait_on_buffer(struct buffer_head *bh)  in wait_on_buffer()  argument
345 	if (buffer_locked(bh))  in wait_on_buffer()
346 		__wait_on_buffer(bh);  in wait_on_buffer()
349 static inline int trylock_buffer(struct buffer_head *bh)  in trylock_buffer()  argument
351 	return likely(!test_and_set_bit_lock(BH_Lock, &bh->b_state));  in trylock_buffer()
354 static inline void lock_buffer(struct buffer_head *bh)  in lock_buffer()  argument
357 	if (!trylock_buffer(bh))  in lock_buffer()
358 		__lock_buffer(bh);  in lock_buffer()