Re: highmem deadlock fix [was Re: VM in 2.4.10(+tweaks) vs. 2.4.9-ac14/15(+stuff)]

Andrea Arcangeli
2001-09-27T23:37:35Z

On Thu, Sep 27, 2001 at 04:18:58PM -0700, Linus Torvalds wrote:
>
> On Thu, 27 Sep 2001, Linus Torvalds wrote:
> >
> > Thinking about it, I think GFP_NOIO also implies "we must not wait for
> > other buffers", because that could deadlock for _other_ things too, like
> > loop and NBD (which use NOIO to make sure that they don't recurse - but
> > that should also imply not waiting for themselves). The GFP_xxx approach
> > should fix those deadlocks too.
>
> Ie the patch would be something like the attached..

well this approch is much less finegrined... but yes, it would fix the
deadlock.

Andrea