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On Wed, Mar 02, 2005 at 08:50:07AM -0800, Jason Thorpe wrote:
>=20
> On Mar 1, 2005, at 7:12 PM, Bill Studenmund wrote:
>=20
> Rather than "return the chain", you do want it to return NULL, but=20
> simply not modify the chain.  If you do:

Point taken. I like this idea.

[snip]

> So, I think the way it needs to be done is:
>=20
> 	error =3D m_defrag(&m, ...);
> 	if (error !=3D 0) {
> 		/* m_defrag() failed, m still points to old chain. */
> 	} else {
> 		/* m_defrag() succeeded, m now points to new chain, old=20
> 		chain freed. */
> 	}
>=20
> Sound reasonable?

That would work too. The main thing I had in my head (which is why my=20
terminology got a little sloppy) was that if there's an error, let's just=
=20
leave the original alone.

Take care,

Bill

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