The helper does the same math and we take care about the special case when flags is 0 too.
Signed-off-by: David Sterba <[email protected]> --- fs/btrfs/volumes.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 909c578506ee..26eb388db343 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -3691,7 +3691,7 @@ static int alloc_profile_is_valid(u64 flags, int extended) return !extended; /* "0" is valid for usual profiles */ /* true if exactly one bit set */ - return (flags & (flags - 1)) == 0; + return is_power_of_2(flags); } static inline int balance_need_close(struct btrfs_fs_info *fs_info) -- 2.18.0
