52 typedef void (bh_end_io_t)(struct buffer_head *bh, int uptodate);
86 static __always_inline void set_buffer_##name(struct buffer_head *bh)	\
88 	set_bit(BH_##bit, &(bh)->b_state);				\
90 static __always_inline void clear_buffer_##name(struct buffer_head *bh)	\
92 	clear_bit(BH_##bit, &(bh)->b_state);				\
94 static __always_inline int buffer_##name(const struct buffer_head *bh)	\
96 	return test_bit(BH_##bit, &(bh)->b_state);			\
103 static __always_inline int test_set_buffer_##name(struct buffer_head *bh) \
105 	return test_and_set_bit(BH_##bit, &(bh)->b_state);		\
107 static __always_inline int test_clear_buffer_##name(struct buffer_head *bh) \
109 	return test_and_clear_bit(BH_##bit, &(bh)->b_state);		\
135 #define bh_offset(bh)		((unsigned long)(bh)->b_data & ~PAGE_MASK)  argument
152 void mark_buffer_dirty(struct buffer_head *bh);
153 void mark_buffer_write_io_error(struct buffer_head *bh);
155 void touch_buffer(struct buffer_head *bh);
156 void set_bh_page(struct buffer_head *bh,
163 void end_buffer_read_sync(struct buffer_head *bh, int uptodate);
164 void end_buffer_write_sync(struct buffer_head *bh, int uptodate);
165 void end_buffer_async_write(struct buffer_head *bh, int uptodate);
168 void mark_buffer_dirty_inode(struct buffer_head *bh, struct inode *inode);
175 static inline void clean_bdev_bh_alias(struct buffer_head *bh)  in clean_bdev_bh_alias()  argument
177 	clean_bdev_aliases(bh->b_bdev, bh->b_blocknr, 1);  in clean_bdev_bh_alias()
180 void mark_buffer_async_write(struct buffer_head *bh);
182 wait_queue_head_t *bh_waitq_head(struct buffer_head *bh);
194 void free_buffer_head(struct buffer_head * bh);
195 void unlock_buffer(struct buffer_head *bh);
196 void __lock_buffer(struct buffer_head *bh);
197 void ll_rw_block(int, int, int, struct buffer_head * bh[]);
198 int sync_dirty_buffer(struct buffer_head *bh);
199 int __sync_dirty_buffer(struct buffer_head *bh, int op_flags);
200 void write_dirty_buffer(struct buffer_head *bh, int op_flags);
204 int bh_uptodate_or_lock(struct buffer_head *bh);
205 int bh_submit_read(struct buffer_head *bh);
281 static inline void get_bh(struct buffer_head *bh)  in get_bh()  argument
283         atomic_inc(&bh->b_count);  in get_bh()
286 static inline void put_bh(struct buffer_head *bh)  in put_bh()  argument
289         atomic_dec(&bh->b_count);  in put_bh()
292 static inline void brelse(struct buffer_head *bh)  in brelse()  argument
294 	if (bh)  in brelse()
295 		__brelse(bh);  in brelse()
298 static inline void bforget(struct buffer_head *bh)  in bforget()  argument
300 	if (bh)  in bforget()
301 		__bforget(bh);  in bforget()
342 map_bh(struct buffer_head *bh, struct super_block *sb, sector_t block)  in map_bh()  argument
344 	set_buffer_mapped(bh);  in map_bh()
345 	bh->b_bdev = sb->s_bdev;  in map_bh()
346 	bh->b_blocknr = block;  in map_bh()
347 	bh->b_size = sb->s_blocksize;  in map_bh()
350 static inline void wait_on_buffer(struct buffer_head *bh)  in wait_on_buffer()  argument
353 	if (buffer_locked(bh))  in wait_on_buffer()
354 		__wait_on_buffer(bh);  in wait_on_buffer()
357 static inline int trylock_buffer(struct buffer_head *bh)  in trylock_buffer()  argument
359 	return likely(!test_and_set_bit_lock(BH_Lock, &bh->b_state));  in trylock_buffer()
362 static inline void lock_buffer(struct buffer_head *bh)  in lock_buffer()  argument
365 	if (!trylock_buffer(bh))  in lock_buffer()
366 		__lock_buffer(bh);  in lock_buffer()