BITMAP_LAST_BYTE_MASK 5920 fs/btrfs/extent_io.c 		mask_to_set &= BITMAP_LAST_BYTE_MASK(size);
BITMAP_LAST_BYTE_MASK 5962 fs/btrfs/extent_io.c 		mask_to_clear &= BITMAP_LAST_BYTE_MASK(size);
BITMAP_LAST_BYTE_MASK  176 fs/btrfs/free-space-tree.c 		mask_to_set &= BITMAP_LAST_BYTE_MASK(size);