在 2022/8/23 2:11, Martin Wilck 写道: > On Mon, 2022-08-22 at 12:46 -0500, Benjamin Marzinski wrote: >> On Mon, Aug 22, 2022 at 04:15:01PM +0000, Martin Wilck wrote: >>> >>>> + if (i >= VECTOR_SIZE(vecs- >>>>> pathvec)) >>>> + i = VECTOR_SIZE(vecs- >>>>> pathvec) - 1; >>> >>> What if VECTOR_SIZE(vecs->pathvec) == 0? Maybe you should catch >>> that in >>> the while () condition above? >> >> I could for clarity if you want, but the code is correct as is. If >> VECTOR_SIZE() is 0, then i will start at -1. This will cause the >> while() >> loop to immediately exit, since VECTOR_SLOT() checks for i < 0. Right >> after the while loop, i gets bumped up to start checking at the first >> device (which of course isn't there). It's the same logic as what >> happens if the while() loop searches through the entire pathvec, and >> doesn't find any checked paths. Obviously, the empty vector case >> does a >> bit of unnecessary work after finding out that the vector is empty, >> and >> I could add something like >> >> if (VECTOR_SIZE(vecs->pathvec) == 0) { >> checker_state = CHECKER_FINISHED; >> goto unlock; >> } >> >> If you'd prefer. > > No, it's fine. I realized that your code was correct after I'd hit > "Send" :-/ > > Wu Guanghaho, have you already some results to report? > The test environment is not ready, it may take next week to have results. > Martin > > > . > -- dm-devel mailing list dm-devel@xxxxxxxxxx https://listman.redhat.com/mailman/listinfo/dm-devel