Messages in this thread | | | Date | Fri, 16 Feb 2001 19:49:47 +0100 | From | Manfred Spraul <> | Subject | Re: x86 ptep_get_and_clear question |
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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()?
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