fs/udf/inode.c

706 	struct kernel_long_ad laarr[EXTENT_MERGE_SIZE];
729 	   alternate between laarr[0] and laarr[1] for locations of the
757 		laarr[c].extLength = (etype << 30) | elen;
758 		laarr[c].extLocation = eloc;
802 				laarr[0] = laarr[1];
806 			memset(&laarr[0].extLocation, 0x00,
808 			laarr[0].extLength = EXT_NOT_RECORDED_NOT_ALLOCATED;
815 		ret = udf_do_extend_file(inode, &prev_epos, laarr, hole_len);
827 		laarr[c].extLength = EXT_NOT_RECORDED_NOT_ALLOCATED |
829 		memset(&laarr[c].extLocation, 0x00,
841 			laarr[2] = laarr[0];
842 			laarr[0] = laarr[1];
843 			laarr[1] = laarr[2];
851 			laarr[c + 1].extLength = (etype << 30) | elen;
852 			laarr[c + 1].extLocation = eloc;
862 	if ((laarr[c].extLength >> 30) == (EXT_NOT_RECORDED_ALLOCATED >> 30))
863 		newblocknum = laarr[c].extLocation.logicalBlockNum + offset;
886 	udf_split_extents(inode, &c, offset, newblocknum, laarr, &endnum);
889 		udf_prealloc_extents(inode, c, lastblock, laarr, &endnum);
891 	/* merge any continuous blocks in laarr */
892 	udf_merge_extents(inode, laarr, &endnum);
897 	ret = udf_update_extents(inode, laarr, startnum, endnum, &prev_epos);
926 			       struct kernel_long_ad *laarr, int *endnum)
931 	if ((laarr[*c].extLength >> 30) == (EXT_NOT_RECORDED_ALLOCATED >> 30) ||
932 	    (laarr[*c].extLength >> 30) ==
935 		int blen = ((laarr[curr].extLength & UDF_EXTENT_LENGTH_MASK) +
937 		int8_t etype = (laarr[curr].extLength >> 30);
942 			laarr[curr + 2] = laarr[curr + 1];
943 			laarr[curr + 1] = laarr[curr];
945 			laarr[curr + 3] = laarr[curr + 1];
946 			laarr[curr + 2] = laarr[curr + 1] = laarr[curr];
952 						&laarr[curr].extLocation,
954 				laarr[curr].extLength =
957 				laarr[curr].extLocation.logicalBlockNum = 0;
958 				laarr[curr].extLocation.
961 				laarr[curr].extLength = (etype << 30) |
968 		laarr[curr].extLocation.logicalBlockNum = newblocknum;
970 			laarr[curr].extLocation.partitionReferenceNum =
972 		laarr[curr].extLength = EXT_RECORDED_ALLOCATED |
978 				laarr[curr].extLocation.logicalBlockNum +=
980 			laarr[curr].extLength = (etype << 30) |
989 				 struct kernel_long_ad *laarr,
1000 		if ((laarr[c + 1].extLength >> 30) ==
1004 				(((laarr[c + 1].extLength &
1016 		} else if ((laarr[i].extLength >> 30) ==
1018 			length += (((laarr[i].extLength &
1027 		int next = laarr[start].extLocation.logicalBlockNum +
1028 			(((laarr[start].extLength & UDF_EXTENT_LENGTH_MASK) +
1032 				laarr[start].extLocation.partitionReferenceNum,
1038 				laarr[start].extLength +=
1042 				memmove(&laarr[c + 2], &laarr[c + 1],
1045 				laarr[c + 1].extLocation.logicalBlockNum = next;
1046 				laarr[c + 1].extLocation.partitionReferenceNum =
1047 					laarr[c].extLocation.
1049 				laarr[c + 1].extLength =
1057 				int elen = ((laarr[i].extLength &
1063 					laarr[i].extLength -=
1070 						memmove(&laarr[i],
1071 							&laarr[i + 1],
1084 static void udf_merge_extents(struct inode *inode, struct kernel_long_ad *laarr,
1092 		struct kernel_long_ad *li /*l[i]*/ = &laarr[i];
1093 		struct kernel_long_ad *lip1 /*l[i plus 1]*/ = &laarr[i + 1];
1111 					memmove(&laarr[i + 1], &laarr[i + 2],
1146 					memmove(&laarr[i + 1], &laarr[i + 2],
1168 static int udf_update_extents(struct inode *inode, struct kernel_long_ad *laarr,
1183 					      laarr[i].extLocation,
1184 					      laarr[i].extLength);
1192 			udf_next_aext(inode, epos, &laarr[i].extLocation,
1193 				      &laarr[i].extLength, 1);
1200 		udf_write_aext(inode, epos, &laarr[i].extLocation,
1201 			       laarr[i].extLength, 1);