Re: disable-cap-mlock

Chris Wright
2004-04-02T02:21:55Z

* Andrea Arcangeli (andrea@suse.de) wrote:
> that has nothing to do with freeing the page, that's just releasing 1
> refcount, because you dropped the pte mapping, the page is still there
> healthy in the pagecache ready for somebody else to shmat. If you were
> right then a shmdt+shmat would corrupt the SGA.

Ah, yes I see what you are saying. This is the same issue with normal
pages and SHM_LOCK that I mentioned earlier, I believe. I don't see the
best solution, because once you detach w/out any destroy, there could be
nobody to assign the accounting to. Do you agree?

thanks,
-chris
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