Btrfs: self-tests: Support testing all possible sectorsizes and nodesizes

To test all possible sectorsizes, this commit adds a sectorsize
array. This commit executes the tests for all possible sectorsizes and
nodesizes.
Reviewed-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
Signed-off-by: Feifei Xu <xufeifei@linux.vnet.ibm.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/super.c

@@ -2318,15 +2318,21 @@ static void btrfs_print_mod_info(void)
 
 static int btrfs_run_sanity_tests(void)
 {
-	int ret;
+	int ret, i;
 	u32 sectorsize, nodesize;
-
-	sectorsize = PAGE_SIZE;
-	nodesize = PAGE_SIZE;
+	u32 test_sectorsize[] = {
+		PAGE_SIZE,
+	};
 	ret = btrfs_init_test_fs();
 	if (ret)
 		return ret;
-
+	for (i = 0; i < ARRAY_SIZE(test_sectorsize); i++) {
+		sectorsize = test_sectorsize[i];
+		for (nodesize = sectorsize;
+		     nodesize <= BTRFS_MAX_METADATA_BLOCKSIZE;
+		     nodesize <<= 1) {
+			pr_info("BTRFS: selftest: sectorsize: %u  nodesize: %u\n",
+				sectorsize, nodesize);
 			ret = btrfs_test_free_space_cache(sectorsize, nodesize);
 			if (ret)
 				goto out;
@@ -2344,6 +2350,10 @@ static int btrfs_run_sanity_tests(void)
 			if (ret)
 				goto out;
 			ret = btrfs_test_free_space_tree(sectorsize, nodesize);
+			if (ret)
+				goto out;
+		}
+	}
 out:
 	btrfs_destroy_test_fs();
 	return ret;