um_bmask           62 isofs/udf/udf.h 	int um_bmask;
um_bmask          108 isofs/udf/udf.h 			 (size + ump->um_bmask) & ~ump->um_bmask, bp));
um_bmask          298 isofs/udf/udf_vfsops.c 			ump->um_bmask = ump->um_bsize - 1;