btrfs: use common helper instead of open coding a bit test



The helper does the same math and we take care about the special case
when flags is 0 too.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

parent 0110a4c4

fs/btrfs/volumes.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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)