Re: [PATCH] GHES: Fix cached error-status

From: Huang\, Ying
Date: Sun Oct 25 2015 - 23:20:42 EST

Hi, Tony,

"Luck, Tony" <tony.luck@xxxxxxxxx> writes:
>> ping?
> I'm not actually sure that the code is wrong. As you say it is a pretty strange loop.
> We seem to want to look at a bunch of conditions, and use "continue" to ignore
> bits until we find one that we like the look of. Perhaps as soon as we do, we want
> to believe it to get our return value? Perhaps the code knows that we won't find
> another section that matches all the tests, so it isn't worth going around the loop
> again.
> Ying: You wrote this code 4 years ago. Any recollections of why it looks like it does?

Sorry for late. I read the code again, and found the although the
original code is a little tricky, it actually works.

In ghes_estatus_caches[], for caches with same contents, the cache with
biggest (newest) cache->time_in should be the first. So if we found one
cache with too small (old) cache->time_in, we can say there are no cache
with same contents and bigger (newer) cache->time_in, so that we can
make decision (break) earlier.

Best Regards,
Huang, Ying
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