774 					 struct kiocb *iocb,  in should_fault_in_pages()  argument
787 	offs = offset_in_page(iocb->ki_pos);  in should_fault_in_pages()
801 static ssize_t gfs2_file_direct_read(struct kiocb *iocb, struct iov_iter *to,  in gfs2_file_direct_read()  argument
804 	struct file *file = iocb->ki_filp;  in gfs2_file_direct_read()
837 	ret = iomap_dio_rw(iocb, to, &gfs2_iomap_ops, NULL,  in gfs2_file_direct_read()
847 	if (should_fault_in_pages(to, iocb, &prev_count, &window_size)) {  in gfs2_file_direct_read()
864 static ssize_t gfs2_file_direct_write(struct kiocb *iocb, struct iov_iter *from,  in gfs2_file_direct_write()  argument
867 	struct file *file = iocb->ki_filp;  in gfs2_file_direct_write()
898 	if (iocb->ki_pos + iov_iter_count(from) > i_size_read(&ip->i_inode))  in gfs2_file_direct_write()
902 	ret = iomap_dio_rw(iocb, from, &gfs2_iomap_ops, NULL,  in gfs2_file_direct_write()
915 	if (should_fault_in_pages(from, iocb, &prev_count, &window_size)) {  in gfs2_file_direct_write()
932 static ssize_t gfs2_file_read_iter(struct kiocb *iocb, struct iov_iter *to)  in gfs2_file_read_iter()  argument
947 	if (iocb->ki_flags & IOCB_DIRECT)  in gfs2_file_read_iter()
948 		return gfs2_file_direct_read(iocb, to, &gh);  in gfs2_file_read_iter()
951 	iocb->ki_flags |= IOCB_NOIO;  in gfs2_file_read_iter()
952 	ret = generic_file_read_iter(iocb, to);  in gfs2_file_read_iter()
953 	iocb->ki_flags &= ~IOCB_NOIO;  in gfs2_file_read_iter()
962 		if (iocb->ki_flags & IOCB_NOWAIT)  in gfs2_file_read_iter()
965 	ip = GFS2_I(iocb->ki_filp->f_mapping->host);  in gfs2_file_read_iter()
972 	ret = generic_file_read_iter(iocb, to);  in gfs2_file_read_iter()
979 	if (should_fault_in_pages(to, iocb, &prev_count, &window_size)) {  in gfs2_file_read_iter()
993 static ssize_t gfs2_file_buffered_write(struct kiocb *iocb,  in gfs2_file_buffered_write()  argument
997 	struct file *file = iocb->ki_filp;  in gfs2_file_buffered_write()
1022 	if (should_fault_in_pages(from, iocb, &prev_count, &window_size)) {  in gfs2_file_buffered_write()
1045 	ret = iomap_file_buffered_write(iocb, from, &gfs2_iomap_ops);  in gfs2_file_buffered_write()
1049 		iocb->ki_pos += ret;  in gfs2_file_buffered_write()
1060 	if (should_fault_in_pages(from, iocb, &prev_count, &window_size)) {  in gfs2_file_buffered_write()
1086 static ssize_t gfs2_file_write_iter(struct kiocb *iocb, struct iov_iter *from)  in gfs2_file_write_iter()  argument
1088 	struct file *file = iocb->ki_filp;  in gfs2_file_write_iter()
1094 	gfs2_size_hint(file, iocb->ki_pos, iov_iter_count(from));  in gfs2_file_write_iter()
1096 	if (iocb->ki_flags & IOCB_APPEND) {  in gfs2_file_write_iter()
1104 	ret = generic_write_checks(iocb, from);  in gfs2_file_write_iter()
1116 	if (iocb->ki_flags & IOCB_DIRECT) {  in gfs2_file_write_iter()
1120 		ret = gfs2_file_direct_write(iocb, from, &gh);  in gfs2_file_write_iter()
1124 		iocb->ki_flags |= IOCB_DSYNC;  in gfs2_file_write_iter()
1125 		buffered = gfs2_file_buffered_write(iocb, from, &gh);  in gfs2_file_write_iter()
1139 		ret2 = generic_write_sync(iocb, buffered);  in gfs2_file_write_iter()
1141 				(iocb->ki_pos - buffered) >> PAGE_SHIFT,  in gfs2_file_write_iter()
1142 				(iocb->ki_pos - 1) >> PAGE_SHIFT);  in gfs2_file_write_iter()
1146 		ret = gfs2_file_buffered_write(iocb, from, &gh);  in gfs2_file_write_iter()
1148 			ret = generic_write_sync(iocb, ret);  in gfs2_file_write_iter()