378 	int (*readpages)(struct file *filp, struct address_space *mapping,
381 	int (*write_begin)(struct file *, struct address_space *mapping,
384 	int (*write_end)(struct file *, struct address_space *mapping,
418 int pagecache_write_begin(struct file *, struct address_space *mapping,
422 int pagecache_write_end(struct file *, struct address_space *mapping,
495 int mapping_tagged(struct address_space *mapping, int tag);
497 static inline void i_mmap_lock_write(struct address_space *mapping)  in i_mmap_lock_write()  argument
499 	down_write(&mapping->i_mmap_rwsem);  in i_mmap_lock_write()
502 static inline void i_mmap_unlock_write(struct address_space *mapping)  in i_mmap_unlock_write()  argument
504 	up_write(&mapping->i_mmap_rwsem);  in i_mmap_unlock_write()
507 static inline void i_mmap_lock_read(struct address_space *mapping)  in i_mmap_lock_read()  argument
509 	down_read(&mapping->i_mmap_rwsem);  in i_mmap_lock_read()
512 static inline void i_mmap_unlock_read(struct address_space *mapping)  in i_mmap_unlock_read()  argument
514 	up_read(&mapping->i_mmap_rwsem);  in i_mmap_unlock_read()
520 static inline int mapping_mapped(struct address_space *mapping)  in mapping_mapped()  argument
522 	return	!RB_EMPTY_ROOT(&mapping->i_mmap);  in mapping_mapped()
534 static inline int mapping_writably_mapped(struct address_space *mapping)  in mapping_writably_mapped()  argument
536 	return atomic_read(&mapping->i_mmap_writable) > 0;  in mapping_writably_mapped()
539 static inline int mapping_map_writable(struct address_space *mapping)  in mapping_map_writable()  argument
541 	return atomic_inc_unless_negative(&mapping->i_mmap_writable) ?  in mapping_map_writable()
545 static inline void mapping_unmap_writable(struct address_space *mapping)  in mapping_unmap_writable()  argument
547 	atomic_dec(&mapping->i_mmap_writable);  in mapping_unmap_writable()
550 static inline int mapping_deny_writable(struct address_space *mapping)  in mapping_deny_writable()  argument
552 	return atomic_dec_unless_positive(&mapping->i_mmap_writable) ?  in mapping_deny_writable()
556 static inline void mapping_allow_writable(struct address_space *mapping)  in mapping_allow_writable()  argument
558 	atomic_inc(&mapping->i_mmap_writable);  in mapping_allow_writable()
2404 unsigned long invalidate_mapping_pages(struct address_space *mapping,
2413 extern int invalidate_inode_pages2(struct address_space *mapping);
2414 extern int invalidate_inode_pages2_range(struct address_space *mapping,
2423 extern int filemap_write_and_wait(struct address_space *mapping);
2424 extern int filemap_write_and_wait_range(struct address_space *mapping,
2426 extern int __filemap_fdatawrite_range(struct address_space *mapping,
2428 extern int filemap_fdatawrite_range(struct address_space *mapping,
2559 extern void address_space_init_once(struct address_space *mapping);
2664 file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping);
2813 extern int simple_write_begin(struct file *file, struct address_space *mapping,
2816 extern int simple_write_end(struct file *file, struct address_space *mapping,