On Mon, 2007-07-09 at 13:47 +1000, Benjamin Herrenschmidt wrote: > Hi folks ! > > While toying around with various MM callbacks, I found out that > flush_tlb_mm() as a generic hook provided by the archs has been mostly > obsoleted by the mmu_gather stuff.
And since life is always better with patches... here are two that do fork and proc/fs/task_mmu. There should be an improvement on archs like hash-table based ppc32 where flush_tlb_mm() currently has to walk the page tables, which means an additional walk pass in fork. With this patch, there will be only one pass, and it will only hit the pages that have actually been marked RO. I need to do some proper testing, but in copy to this, I'm posting the patches anyway for review / comments. Ben. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
