Reviewed-by: "Theodore Ts'o" <ty...@mit.edu> > + v = atomic64_add_return(1 + (1ULL << PCPU_COUNT_BITS), > + &ref->count); > + > + if (!(v >> PCPU_COUNT_BITS) && > + REF_STATUS(pcpu_count) == PCPU_REF_NONE && alloc) > + percpu_ref_alloc(ref, pcpu_count);
This assumes that the kernel is compiled with -fno-strict-overflow. Which we do, and this is not the only place int the kernel where we depend on this, so while I was nervous before, I'm okay with it now. Could we at least have a comment saying that we're depending on -fno-strict-overflow, though? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
