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SubjectRe: [PATCH v12 0/8] MADV_FREE support
Kirill, Do you have any comment?

On Wed, Jul 09, 2014 at 03:22:21PM +0900, Minchan Kim wrote:
> This patch enable MADV_FREE hint for madvise syscall, which have
> been supported by other OSes. [PATCH 1] includes the details.
>
> [1] support MADVISE_FREE for !THP page so if VM encounter
> THP page in syscall context, it splits THP page.
> [2-7] is to preparing to call madvise syscall without THP plitting
> [8] enable THP page support for MADV_FREE.
>
>
> * From v11
> * Fix arm build - Steve
> * Separate patch for arm and arm64 - Steve
> * Remove unnecessary check - Kirill
> * Skip non-vm_normal page - Kirill
> * Add Acked-by - Zhang
> * Sparc64 build fix
> * Pagetable walker THP handling fix
>
> * From v10
> * Add Acked-by from arch stuff(x86, s390)
> * Pagewalker based pagetable working - Kirill
> * Fix try_to_unmap_one broken with hwpoison - Kirill
> * Use VM_BUG_ON_PAGE in madvise_free_pmd - Kirill
> * Fix pgtable-3level.h for arm - Steve
>
> * From v9
> * Add Acked-by - Rik
> * Add THP page support - Kirill
>
> * From v8
> * Rebased-on v3.16-rc2-mmotm-2014-06-25-16-44
>
> * From v7
> * Rebased-on next-20140613
>
> * From v6
> * Remove page from swapcache in syscal time
> * Move utility functions from memory.c to madvise.c - Johannes
> * Rename untilify functtions - Johannes
> * Remove unnecessary checks from vmscan.c - Johannes
> * Rebased-on v3.15-rc5-mmotm-2014-05-16-16-56
> * Drop Reviewe-by because there was some changes since then.
>
> * From v5
> * Fix PPC problem which don't flush TLB - Rik
> * Remove unnecessary lazyfree_range stub function - Rik
> * Rebased on v3.15-rc5
>
> * From v4
> * Add Reviewed-by: Zhang Yanfei
> * Rebase on v3.15-rc1-mmotm-2014-04-15-16-14
>
> * From v3
> * Add "how to work part" in description - Zhang
> * Add page_discardable utility function - Zhang
> * Clean up
>
> * From v2
> * Remove forceful dirty marking of swap-readed page - Johannes
> * Remove deactivation logic of lazyfreed page
> * Rebased on 3.14
> * Remove RFC tag
>
> * From v1
> * Use custom page table walker for madvise_free - Johannes
> * Remove PG_lazypage flag - Johannes
> * Do madvise_dontneed instead of madvise_freein swapless system
>
> Minchan Kim (8):
> [1] mm: support madvise(MADV_FREE)
> [2] x86: add pmd_[dirty|mkclean] for THP
> [3] sparc: add pmd_[dirty|mkclean] for THP
> [4] powerpc: add pmd_[dirty|mkclean] for THP
> [5] s390: add pmd_[dirty|mkclean] for THP
> [6] arm: add pmd_[dirty|mkclean] for THP
> [7] arm64: add pmd_[dirty|mkclean] for THP
> [8] mm: Don't split THP page when syscall is called
>
> arch/arm/include/asm/pgtable-3level.h | 3 +
> arch/arm64/include/asm/pgtable.h | 2 +
> arch/powerpc/include/asm/pgtable-ppc64.h | 2 +
> arch/s390/include/asm/pgtable.h | 12 +++
> arch/sparc/include/asm/pgtable_64.h | 16 ++++
> arch/x86/include/asm/pgtable.h | 10 ++
> include/linux/huge_mm.h | 4 +
> include/linux/rmap.h | 9 +-
> include/linux/vm_event_item.h | 1 +
> include/uapi/asm-generic/mman-common.h | 1 +
> mm/huge_memory.c | 35 +++++++
> mm/madvise.c | 155 +++++++++++++++++++++++++++++++
> mm/rmap.c | 46 ++++++++-
> mm/vmscan.c | 64 +++++++++----
> mm/vmstat.c | 1 +
> 15 files changed, 341 insertions(+), 20 deletions(-)
>
> --
> 2.0.0
>
> --
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--
Kind regards,
Minchan Kim


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