ROOT_TAG_SHIFT
(1 << (ROOT_TAG_SHIFT + IDR_FREE)))
xa->xa_flags >> ROOT_TAG_SHIFT);
root->xa_flags |= (__force gfp_t)(1 << (tag + ROOT_TAG_SHIFT));
root->xa_flags &= (__force gfp_t)~(1 << (tag + ROOT_TAG_SHIFT));
root->xa_flags &= (__force gfp_t)((1 << ROOT_TAG_SHIFT) - 1);
return (__force int)root->xa_flags & (1 << (tag + ROOT_TAG_SHIFT));
return (__force unsigned)root->xa_flags >> ROOT_TAG_SHIFT;