Re: [PATCH 2/2] mremap: use mmu gather logic for tlb flush in mremap

On Mon, Nov 28, 2016 at 9:32 AM, Dave Hansen wrote: > > But, both call-sites are still keeping 'force_flush' to store the > information about whether we ever saw a dirty pte. If we moved _that_ > logic into the x86 mmu_gather code, we could get rid of all the > 'force_flush' tracking in both call

Re: [PATCH 2/2] mremap: use mmu gather logic for tlb flush in mremap

On 11/28/2016 12:40 AM, Aaron Lu wrote: > As suggested by Linus, the same mmu gather logic could be used for tlb > flush in mremap and this patch just did that. > > Note that since there is no page added to "struct mmu_gather" for free > during mremap, when tlb needs to be flushed, we can use tlb_

Re: [PATCH 2/2] mremap: use mmu gather logic for tlb flush in mremap

On Mon, Nov 28, 2016 at 12:40 AM, Aaron Lu wrote: > As suggested by Linus, the same mmu gather logic could be used for tlb > flush in mremap and this patch just did that. Ok, looking at this patch, I still think it looks like the right thing to do, but I'm admittedly rather less certain of it. T

[PATCH 2/2] mremap: use mmu gather logic for tlb flush in mremap

As suggested by Linus, the same mmu gather logic could be used for tlb flush in mremap and this patch just did that. Note that since there is no page added to "struct mmu_gather" for free during mremap, when tlb needs to be flushed, we can use tlb_flush_mmu or tlb_flush_mmu_tlbonly. Using tlb_flus