- end = buffer + buflen;
- alloc = (old_state == GFS2_BLKST_FREE) ? 0x55 : 0;
-
- while (byte < end) {
- /* If we're looking for a free block we can eliminate all
- bitmap settings with 0x55, which represents four data
- blocks in a row. If we're looking for a data block, we can
- eliminate 0x00 which corresponds to four free blocks. */
- if ((*byte & 0x55) == alloc) {
- blk += (8 - bit) >> 1;
-
- bit = 0;
- byte++;
-
+ bitlong = bit;
+#if BITS_PER_LONG == 32
+ plong55 = 0x55555555;
+#else
+ plong55 = 0x5555555555555555;
+#endif
+ while (byte < buffer + buflen) {
+
+ if (bitlong == 0 && old_state == 0 && *plong == plong55) {
+ plong++;
+ byte += sizeof(unsigned long);
+ blk += sizeof(unsigned long) * GFS2_NBBY;