block/partitions/mac.c: obey the state->limit constraint

It isn't necessary to read the information of partitions whose number is equal and more than state->limit since only maximum state->limit partitions will be added inside rescan_partitions(). That is also what other kind of partitions are doing. Signed-off-by: Ming Lei <[email protected]> Cc: Jens Axboe <[email protected]> Cc: Yasuaki Ishimatsu <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
mkrufky · Feb 28, 2013 · 06004e6 · 06004e6
1 parent 8b8a6e1
commit 06004e6
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/block/partitions/mac.c b/block/partitions/mac.c
@@ -63,6 +63,10 @@ int mac_partition(struct parsed_partitions *state)
 		put_dev_sector(sect);
 		return 0;
 	}
+
+	if (blocks_in_map >= state->limit)
+		blocks_in_map = state->limit - 1;
+
 	strlcat(state->pp_buf, " [mac]", PAGE_SIZE);
 	for (slot = 1; slot <= blocks_in_map; ++slot) {
 		int pos = slot * secsize;