779 static ssize_t gfs2_file_direct_read(struct kiocb *iocb, struct iov_iter *to,  in gfs2_file_direct_read()  argument
782 	struct file *file = iocb->ki_filp;  in gfs2_file_direct_read()
795 	ret = iomap_dio_rw(iocb, to, &gfs2_iomap_ops, NULL, 0);  in gfs2_file_direct_read()
802 static ssize_t gfs2_file_direct_write(struct kiocb *iocb, struct iov_iter *from,  in gfs2_file_direct_write()  argument
805 	struct file *file = iocb->ki_filp;  in gfs2_file_direct_write()
809 	loff_t offset = iocb->ki_pos;  in gfs2_file_direct_write()
829 	ret = iomap_dio_rw(iocb, from, &gfs2_iomap_ops, NULL, 0);  in gfs2_file_direct_write()
839 static ssize_t gfs2_file_read_iter(struct kiocb *iocb, struct iov_iter *to)  in gfs2_file_read_iter()  argument
846 	if (iocb->ki_flags & IOCB_DIRECT) {  in gfs2_file_read_iter()
847 		ret = gfs2_file_direct_read(iocb, to, &gh);  in gfs2_file_read_iter()
850 		iocb->ki_flags &= ~IOCB_DIRECT;  in gfs2_file_read_iter()
852 	iocb->ki_flags |= IOCB_NOIO;  in gfs2_file_read_iter()
853 	ret = generic_file_read_iter(iocb, to);  in gfs2_file_read_iter()
854 	iocb->ki_flags &= ~IOCB_NOIO;  in gfs2_file_read_iter()
862 		if (iocb->ki_flags & IOCB_NOWAIT)  in gfs2_file_read_iter()
865 	ip = GFS2_I(iocb->ki_filp->f_mapping->host);  in gfs2_file_read_iter()
870 	ret = generic_file_read_iter(iocb, to);  in gfs2_file_read_iter()
891 static ssize_t gfs2_file_write_iter(struct kiocb *iocb, struct iov_iter *from)  in gfs2_file_write_iter()  argument
893 	struct file *file = iocb->ki_filp;  in gfs2_file_write_iter()
899 	gfs2_size_hint(file, iocb->ki_pos, iov_iter_count(from));  in gfs2_file_write_iter()
901 	if (iocb->ki_flags & IOCB_APPEND) {  in gfs2_file_write_iter()
909 	ret = generic_write_checks(iocb, from);  in gfs2_file_write_iter()
921 	if (iocb->ki_flags & IOCB_DIRECT) {  in gfs2_file_write_iter()
925 		ret = gfs2_file_direct_write(iocb, from, &gh);  in gfs2_file_write_iter()
929 		iocb->ki_flags |= IOCB_DSYNC;  in gfs2_file_write_iter()
931 		buffered = iomap_file_buffered_write(iocb, from, &gfs2_iomap_ops);  in gfs2_file_write_iter()
946 		iocb->ki_pos += buffered;  in gfs2_file_write_iter()
947 		ret2 = generic_write_sync(iocb, buffered);  in gfs2_file_write_iter()
949 				(iocb->ki_pos - buffered) >> PAGE_SHIFT,  in gfs2_file_write_iter()
950 				(iocb->ki_pos - 1) >> PAGE_SHIFT);  in gfs2_file_write_iter()
955 		ret = iomap_file_buffered_write(iocb, from, &gfs2_iomap_ops);  in gfs2_file_write_iter()
958 			iocb->ki_pos += ret;  in gfs2_file_write_iter()
959 			ret = generic_write_sync(iocb, ret);  in gfs2_file_write_iter()