Re: [patch] user-vm-unlock-2.5.31-A2

From: Ingo Molnar (
Date: Fri Aug 16 2002 - 04:51:37 EST

On Thu, 15 Aug 2002, Linus Torvalds wrote:

> The child (Y) it forks off, however, may use thread (Z) for some
> subtask. Not pthreads, it might be just a clone-by-hand. So it may be
> doing an exit while it's address space is still actively used by another
> thread - but just because (X) wanted to use CLONE_SETTID to get the
> child information on (Y) does _not_ mean that it's address space (and
> thus that of Z) would somehow be updated at its exit.

yes, now i understand. When using raw clone() then indeed a CLEARTID set
up in X's context does not necesserily have any meaning in Y's (and Z's)


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