1696 	loff_t pos = *ppos;  in generic_file_read_iter()  local
1708 		retval = filemap_write_and_wait_range(mapping, pos,  in generic_file_read_iter()
1709 					pos + count - 1);  in generic_file_read_iter()
1712 			retval = mapping->a_ops->direct_IO(READ, iocb, &data, pos);  in generic_file_read_iter()
1716 			*ppos = pos + retval;  in generic_file_read_iter()
2264 inline int generic_write_checks(struct file *file, loff_t *pos, size_t *count, int isblk)  in generic_write_checks()  argument
2269         if (unlikely(*pos < 0))  in generic_write_checks()
2275                         *pos = i_size_read(inode);  in generic_write_checks()
2278 			if (*pos >= limit) {  in generic_write_checks()
2282 			if (*count > limit - (typeof(limit))*pos) {  in generic_write_checks()
2283 				*count = limit - (typeof(limit))*pos;  in generic_write_checks()
2291 	if (unlikely(*pos + *count > MAX_NON_LFS &&  in generic_write_checks()
2293 		if (*pos >= MAX_NON_LFS) {  in generic_write_checks()
2296 		if (*count > MAX_NON_LFS - (unsigned long)*pos) {  in generic_write_checks()
2297 			*count = MAX_NON_LFS - (unsigned long)*pos;  in generic_write_checks()
2309 		if (unlikely(*pos >= inode->i_sb->s_maxbytes)) {  in generic_write_checks()
2310 			if (*count || *pos > inode->i_sb->s_maxbytes) {  in generic_write_checks()
2316 		if (unlikely(*pos + *count > inode->i_sb->s_maxbytes))  in generic_write_checks()
2317 			*count = inode->i_sb->s_maxbytes - *pos;  in generic_write_checks()
2324 		if (*pos >= isize) {  in generic_write_checks()
2325 			if (*count || *pos > isize)  in generic_write_checks()
2329 		if (*pos + *count > isize)  in generic_write_checks()
2330 			*count = isize - *pos;  in generic_write_checks()
2340 				loff_t pos, unsigned len, unsigned flags,  in pagecache_write_begin()  argument
2345 	return aops->write_begin(file, mapping, pos, len, flags,  in pagecache_write_begin()
2351 				loff_t pos, unsigned len, unsigned copied,  in pagecache_write_end()  argument
2356 	return aops->write_end(file, mapping, pos, len, copied, page, fsdata);  in pagecache_write_end()
2361 generic_file_direct_write(struct kiocb *iocb, struct iov_iter *from, loff_t pos)  in generic_file_direct_write()  argument
2372 	end = (pos + write_len - 1) >> PAGE_CACHE_SHIFT;  in generic_file_direct_write()
2374 	written = filemap_write_and_wait_range(mapping, pos, pos + write_len - 1);  in generic_file_direct_write()
2386 					pos >> PAGE_CACHE_SHIFT, end);  in generic_file_direct_write()
2399 	written = mapping->a_ops->direct_IO(WRITE, iocb, &data, pos);  in generic_file_direct_write()
2411 					      pos >> PAGE_CACHE_SHIFT, end);  in generic_file_direct_write()
2415 		pos += written;  in generic_file_direct_write()
2417 		if (pos > i_size_read(inode) && !S_ISBLK(inode->i_mode)) {  in generic_file_direct_write()
2418 			i_size_write(inode, pos);  in generic_file_direct_write()
2421 		iocb->ki_pos = pos;  in generic_file_direct_write()
2451 				struct iov_iter *i, loff_t pos)  in generic_perform_write()  argument
2472 		offset = (pos & (PAGE_CACHE_SIZE - 1));  in generic_perform_write()
2497 		status = a_ops->write_begin(file, mapping, pos, bytes, flags,  in generic_perform_write()
2508 		status = a_ops->write_end(file, mapping, pos, bytes, copied,  in generic_perform_write()
2530 		pos += copied;  in generic_perform_write()
2562 	loff_t		pos = iocb->ki_pos;  in __generic_file_write_iter()  local
2570 	err = generic_write_checks(file, &pos, &count, S_ISBLK(inode->i_mode));  in __generic_file_write_iter()
2591 		written = generic_file_direct_write(iocb, from, pos);  in __generic_file_write_iter()
2599 		pos += written;  in __generic_file_write_iter()
2602 		status = generic_perform_write(file, from, pos);  in __generic_file_write_iter()
2614 		iocb->ki_pos = pos + status;  in __generic_file_write_iter()
2620 		endbyte = pos + status - 1;  in __generic_file_write_iter()
2621 		err = filemap_write_and_wait_range(file->f_mapping, pos, endbyte);  in __generic_file_write_iter()
2625 						 pos >> PAGE_CACHE_SHIFT,  in __generic_file_write_iter()
2634 		written = generic_perform_write(file, from, pos);  in __generic_file_write_iter()
2636 			iocb->ki_pos = pos + written;  in __generic_file_write_iter()