Linus wrote:
>
> >
> > That second pass is what I had in mind.
> >
> > > * munmap(file): No. Second pass required for correct msync behaviour.
> >
> > It is?
>
> Not now it isn't. We just do a msync() + fsync() for msync(MS_SYNC). Which
> is admittedly not optimal, but it works.
>
Ok, munmap() will be fixed by the tlb shootdown changes - it also uses
zap_page_range().
That leaves msync() - it currently does a flush_tlb_page() for every
single dirty page.
Is it possible to integrate that into the mmu gather code?
tlb_transfer_dirty() in addition to tlb_clear_page()?
-- Manfred - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Fri Feb 23 2001 - 21:00:13 EST