Re: [PATCH 1/19] MUTEX: Introduce simple mutex implementation

Arjan van de Ven
2005-12-14T10:29:41Z

On Tue, 2005-12-13 at 16:10 +0000, Alan Cox wrote:
> On Maw, 2005-12-13 at 15:39 +0000, David Howells wrote:
> > (3) Some people want mutexes to be:
> >
> > (a) only releasable in the same context as they were taken
> >
> > (b) not accessible in interrupt context, or that (a) applies here also
> >
> > (c) not initialisable to the locked state
> >
> > But this means that the current usages all have to be carefully audited,
> > and sometimes that unobvious.
>
> Only if you insist on replacing them immediately. If you submit a
> *small* patch which just adds the new mutexes then a series of small
> patches can gradually convert code where mutexes are better.

this unfortunately is not very realistic in practice...