377 	int (*readpages)(struct file *filp, struct address_space *mapping,
380 	int (*write_begin)(struct file *, struct address_space *mapping,
383 	int (*write_end)(struct file *, struct address_space *mapping,
417 int pagecache_write_begin(struct file *, struct address_space *mapping,
421 int pagecache_write_end(struct file *, struct address_space *mapping,
494 int mapping_tagged(struct address_space *mapping, int tag);
496 static inline void i_mmap_lock_write(struct address_space *mapping)  in i_mmap_lock_write()  argument
498 	down_write(&mapping->i_mmap_rwsem);  in i_mmap_lock_write()
501 static inline void i_mmap_unlock_write(struct address_space *mapping)  in i_mmap_unlock_write()  argument
503 	up_write(&mapping->i_mmap_rwsem);  in i_mmap_unlock_write()
506 static inline void i_mmap_lock_read(struct address_space *mapping)  in i_mmap_lock_read()  argument
508 	down_read(&mapping->i_mmap_rwsem);  in i_mmap_lock_read()
511 static inline void i_mmap_unlock_read(struct address_space *mapping)  in i_mmap_unlock_read()  argument
513 	up_read(&mapping->i_mmap_rwsem);  in i_mmap_unlock_read()
519 static inline int mapping_mapped(struct address_space *mapping)  in mapping_mapped()  argument
521 	return	!RB_EMPTY_ROOT(&mapping->i_mmap);  in mapping_mapped()
533 static inline int mapping_writably_mapped(struct address_space *mapping)  in mapping_writably_mapped()  argument
535 	return atomic_read(&mapping->i_mmap_writable) > 0;  in mapping_writably_mapped()
538 static inline int mapping_map_writable(struct address_space *mapping)  in mapping_map_writable()  argument
540 	return atomic_inc_unless_negative(&mapping->i_mmap_writable) ?  in mapping_map_writable()
544 static inline void mapping_unmap_writable(struct address_space *mapping)  in mapping_unmap_writable()  argument
546 	atomic_dec(&mapping->i_mmap_writable);  in mapping_unmap_writable()
549 static inline int mapping_deny_writable(struct address_space *mapping)  in mapping_deny_writable()  argument
551 	return atomic_dec_unless_positive(&mapping->i_mmap_writable) ?  in mapping_deny_writable()
555 static inline void mapping_allow_writable(struct address_space *mapping)  in mapping_allow_writable()  argument
557 	atomic_inc(&mapping->i_mmap_writable);  in mapping_allow_writable()
2370 unsigned long invalidate_mapping_pages(struct address_space *mapping,
2379 extern int invalidate_inode_pages2(struct address_space *mapping);
2380 extern int invalidate_inode_pages2_range(struct address_space *mapping,
2388 extern int filemap_write_and_wait(struct address_space *mapping);
2389 extern int filemap_write_and_wait_range(struct address_space *mapping,
2391 extern int __filemap_fdatawrite_range(struct address_space *mapping,
2393 extern int filemap_fdatawrite_range(struct address_space *mapping,
2522 extern void address_space_init_once(struct address_space *mapping);
2622 file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping);
2778 extern int simple_write_begin(struct file *file, struct address_space *mapping,
2781 extern int simple_write_end(struct file *file, struct address_space *mapping,