1 files changed, 7 insertions, 1 deletions

diff --git a/fs/btrfs/tests/free-space-tests.c b/fs/btrfs/tests/free-space-tests.c
index 029343b3e854..3956bb2ff84c 100644
--- a/fs/btrfs/tests/free-space-tests.c
+++ b/fs/btrfs/tests/free-space-tests.c
@@ -843,7 +843,13 @@ int btrfs_test_free_space_cache(u32 sectorsize, u32 nodesize)
 
         test_msg("Running btrfs free space cache tests\n");
 
-        cache = btrfs_alloc_dummy_block_group(1024 * 1024 * 1024, sectorsize);
+        /*
+         * For ppc64 (with 64k page size), bytes per bitmap might be
+         * larger than 1G.  To make bitmap test available in ppc64,
+         * alloc dummy block group whose size cross bitmaps.
+         */
+        cache = btrfs_alloc_dummy_block_group(BITS_PER_BITMAP * sectorsize
+                                        + PAGE_SIZE, sectorsize);
         if (!cache) {
                 test_msg("Couldn't run the tests\n");
                 return 0;