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Subject: Re: [patch] threading fix, tid-2.5.47-A3
From: Luca Barbieri <ldb@ldb.ods.org>
To: Ulrich Drepper <drepper@redhat.com>
Cc: Linus Torvalds <torvalds@transmeta.com>, Ingo Molnar <mingo@elte.hu>,
       Kernel Mailing List <linux-kernel@vger.kernel.org>
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> > You could avoid the additional pointer by letting
> > child_tidptr =3D (!(flags & CLONE_VM) && current->user_tid) ?
> > current->user_tid : parent_tidptr;
>=20
> This doesn't work since it would overwrite the TID field in the calling
> thread's descriptor.
No: for the pthread_create case you would pass the pointer to new struct
pthread tid in parent_tidptr, while for fork you would pass the
parameter of cfork as parent_tidptr and child_tidptr would be inherited.

However I don't think that this is a good interface, just a bit better
than having two flags and a single pointer.


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