BITMAP_MEM_MASK
if (__builtin_constant_p(nbits & BITMAP_MEM_MASK) &&
else if (__builtin_constant_p(start & BITMAP_MEM_MASK) &&
__builtin_constant_p(nbits & BITMAP_MEM_MASK) &&
else if (__builtin_constant_p(start & BITMAP_MEM_MASK) &&
__builtin_constant_p(nbits & BITMAP_MEM_MASK) &&
if (__builtin_constant_p(nbits & BITMAP_MEM_MASK) &&
else if (__builtin_constant_p(start & BITMAP_MEM_MASK) &&
__builtin_constant_p(nbits & BITMAP_MEM_MASK) &&
else if (__builtin_constant_p(start & BITMAP_MEM_MASK) &&
__builtin_constant_p(nbits & BITMAP_MEM_MASK) &&