780 					 struct kiocb *iocb,  in should_fault_in_pages()  argument
797 	offs = offset_in_page(iocb->ki_pos);  in should_fault_in_pages()
811 static ssize_t gfs2_file_direct_read(struct kiocb *iocb, struct iov_iter *to,  in gfs2_file_direct_read()  argument
814 	struct file *file = iocb->ki_filp;  in gfs2_file_direct_read()
847 	ret = iomap_dio_rw(iocb, to, &gfs2_iomap_ops, NULL,  in gfs2_file_direct_read()
857 	if (should_fault_in_pages(to, iocb, &prev_count, &window_size)) {  in gfs2_file_direct_read()
874 static ssize_t gfs2_file_direct_write(struct kiocb *iocb, struct iov_iter *from,  in gfs2_file_direct_write()  argument
877 	struct file *file = iocb->ki_filp;  in gfs2_file_direct_write()
909 	if (iocb->ki_pos + iov_iter_count(from) > i_size_read(&ip->i_inode))  in gfs2_file_direct_write()
913 	ret = iomap_dio_rw(iocb, from, &gfs2_iomap_ops, NULL,  in gfs2_file_direct_write()
928 	if (should_fault_in_pages(from, iocb, &prev_count, &window_size)) {  in gfs2_file_direct_write()
949 static ssize_t gfs2_file_read_iter(struct kiocb *iocb, struct iov_iter *to)  in gfs2_file_read_iter()  argument
964 	if (iocb->ki_flags & IOCB_DIRECT)  in gfs2_file_read_iter()
965 		return gfs2_file_direct_read(iocb, to, &gh);  in gfs2_file_read_iter()
968 	iocb->ki_flags |= IOCB_NOIO;  in gfs2_file_read_iter()
969 	ret = generic_file_read_iter(iocb, to);  in gfs2_file_read_iter()
970 	iocb->ki_flags &= ~IOCB_NOIO;  in gfs2_file_read_iter()
979 		if (iocb->ki_flags & IOCB_NOWAIT)  in gfs2_file_read_iter()
982 	ip = GFS2_I(iocb->ki_filp->f_mapping->host);  in gfs2_file_read_iter()
989 	ret = generic_file_read_iter(iocb, to);  in gfs2_file_read_iter()
996 	if (should_fault_in_pages(to, iocb, &prev_count, &window_size)) {  in gfs2_file_read_iter()
1010 static ssize_t gfs2_file_buffered_write(struct kiocb *iocb,  in gfs2_file_buffered_write()  argument
1014 	struct file *file = iocb->ki_filp;  in gfs2_file_buffered_write()
1038 	if (should_fault_in_pages(from, iocb, &prev_count, &window_size)) {  in gfs2_file_buffered_write()
1061 	ret = iomap_file_buffered_write(iocb, from, &gfs2_iomap_ops, NULL);  in gfs2_file_buffered_write()
1073 	if (should_fault_in_pages(from, iocb, &prev_count, &window_size)) {  in gfs2_file_buffered_write()
1099 static ssize_t gfs2_file_write_iter(struct kiocb *iocb, struct iov_iter *from)  in gfs2_file_write_iter()  argument
1101 	struct file *file = iocb->ki_filp;  in gfs2_file_write_iter()
1107 	gfs2_size_hint(file, iocb->ki_pos, iov_iter_count(from));  in gfs2_file_write_iter()
1109 	if (iocb->ki_flags & IOCB_APPEND) {  in gfs2_file_write_iter()
1117 	ret = generic_write_checks(iocb, from);  in gfs2_file_write_iter()
1125 	if (iocb->ki_flags & IOCB_DIRECT) {  in gfs2_file_write_iter()
1135 		ret = gfs2_file_direct_write(iocb, from, &gh);  in gfs2_file_write_iter()
1139 		iocb->ki_flags |= IOCB_DSYNC;  in gfs2_file_write_iter()
1140 		buffered = gfs2_file_buffered_write(iocb, from, &gh);  in gfs2_file_write_iter()
1154 		ret2 = generic_write_sync(iocb, buffered);  in gfs2_file_write_iter()
1156 				(iocb->ki_pos - buffered) >> PAGE_SHIFT,  in gfs2_file_write_iter()
1157 				(iocb->ki_pos - 1) >> PAGE_SHIFT);  in gfs2_file_write_iter()
1165 		ret = gfs2_file_buffered_write(iocb, from, &gh);  in gfs2_file_write_iter()
1167 			ret = generic_write_sync(iocb, ret);  in gfs2_file_write_iter()