785 static ssize_t gfs2_file_direct_read(struct kiocb *iocb, struct iov_iter *to,  in gfs2_file_direct_read()  argument
788 	struct file *file = iocb->ki_filp;  in gfs2_file_direct_read()
801 	ret = iomap_dio_rw(iocb, to, &gfs2_iomap_ops, NULL,  in gfs2_file_direct_read()
802 			   is_sync_kiocb(iocb));  in gfs2_file_direct_read()
810 static ssize_t gfs2_file_direct_write(struct kiocb *iocb, struct iov_iter *from,  in gfs2_file_direct_write()  argument
813 	struct file *file = iocb->ki_filp;  in gfs2_file_direct_write()
817 	loff_t offset = iocb->ki_pos;  in gfs2_file_direct_write()
837 	ret = iomap_dio_rw(iocb, from, &gfs2_iomap_ops, NULL,  in gfs2_file_direct_write()
838 			   is_sync_kiocb(iocb));  in gfs2_file_direct_write()
848 static ssize_t gfs2_file_read_iter(struct kiocb *iocb, struct iov_iter *to)  in gfs2_file_read_iter()  argument
855 	if (iocb->ki_flags & IOCB_DIRECT) {  in gfs2_file_read_iter()
856 		ret = gfs2_file_direct_read(iocb, to, &gh);  in gfs2_file_read_iter()
859 		iocb->ki_flags &= ~IOCB_DIRECT;  in gfs2_file_read_iter()
862 	iocb->ki_flags |= IOCB_NOIO;  in gfs2_file_read_iter()
863 	ret = generic_file_read_iter(iocb, to);  in gfs2_file_read_iter()
864 	iocb->ki_flags &= ~IOCB_NOIO;  in gfs2_file_read_iter()
873 		if (iocb->ki_flags & IOCB_NOWAIT)  in gfs2_file_read_iter()
876 	ip = GFS2_I(iocb->ki_filp->f_mapping->host);  in gfs2_file_read_iter()
881 	ret = generic_file_read_iter(iocb, to);  in gfs2_file_read_iter()
902 static ssize_t gfs2_file_write_iter(struct kiocb *iocb, struct iov_iter *from)  in gfs2_file_write_iter()  argument
904 	struct file *file = iocb->ki_filp;  in gfs2_file_write_iter()
910 	gfs2_size_hint(file, iocb->ki_pos, iov_iter_count(from));  in gfs2_file_write_iter()
912 	if (iocb->ki_flags & IOCB_APPEND) {  in gfs2_file_write_iter()
920 	ret = generic_write_checks(iocb, from);  in gfs2_file_write_iter()
932 	if (iocb->ki_flags & IOCB_DIRECT) {  in gfs2_file_write_iter()
936 		ret = gfs2_file_direct_write(iocb, from, &gh);  in gfs2_file_write_iter()
940 		iocb->ki_flags |= IOCB_DSYNC;  in gfs2_file_write_iter()
942 		buffered = iomap_file_buffered_write(iocb, from, &gfs2_iomap_ops);  in gfs2_file_write_iter()
957 		iocb->ki_pos += buffered;  in gfs2_file_write_iter()
958 		ret2 = generic_write_sync(iocb, buffered);  in gfs2_file_write_iter()
960 				(iocb->ki_pos - buffered) >> PAGE_SHIFT,  in gfs2_file_write_iter()
961 				(iocb->ki_pos - 1) >> PAGE_SHIFT);  in gfs2_file_write_iter()
966 		ret = iomap_file_buffered_write(iocb, from, &gfs2_iomap_ops);  in gfs2_file_write_iter()
969 			iocb->ki_pos += ret;  in gfs2_file_write_iter()
970 			ret = generic_write_sync(iocb, ret);  in gfs2_file_write_iter()