Messages in this thread | | | Date | Fri, 16 Feb 2001 14:02:10 -0500 (EST) | From | Ben LaHaise <> | Subject | Re: x86 ptep_get_and_clear question |
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On Fri, 16 Feb 2001, Manfred Spraul wrote:
> 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()?
Actually, in the filemap_sync case, the flush_tlb_page is redundant -- there's already a call to flush_tlb_range in filemap_sync after the dirty bits are cleared. None of the cpus we support document having a writeback tlb, and intel's docs explicitely state that they do not as they state that the dirty bit is updated on the first write to dirty the pte.
-ben
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