MADV_FREE support
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b4 am [email protected]Versions newest first · linked by author and title
- v5 Latest12 patches 4 repliesIn review
- v416 patches 3 repliesSuperseded
- v317 patches 18 repliesSuperseded
Earlier versions · 2
| Version | Posted | Patches | Replies | Status |
|---|---|---|---|---|
| v2 | 13 patches | 28 replies | Superseded | |
| v1 | 8 patches | 29 replies | Superseded |
Patches in v5 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/12 | mm: support madvise(MADV_FREE)include/ include/ include/ +5 more | +190 | 2 replies | |
| 2/12 | mm: define MADV_FREE for some archesarch/ arch/ arch/ +1 more | +4 | 0 replies | |
| 3/12 | arch: uapi: asm: mman.h: Let MADV_FREE have same value for all architecturesarch/ arch/ arch/ +2 more | +5 | 0 replies | |
| 4/12 | mm: free swp_entry in madvise_freemm/ | +24 | 0 replies | |
| 5/12 | mm: move lazily freed pages to inactive listinclude/ mm/ mm/ | +47 | 0 replies | |
| 6/12 | mm: mark stable page dirty in KSMmm/ | +6 | 0 replies | |
| 7/12 | x86: add pmd_[dirty|mkclean] for THParch/ | +5 | 0 replies | |
| 8/12 | sparc: add pmd_[dirty|mkclean] for THParch/ | +9 | 0 replies | |
| 9/12 | powerpc: add pmd_[dirty|mkclean] for THParch/ | +2 | 0 replies | |
| 10/12 | arm: add pmd_mkclean for THParch/ | +1 | 0 replies | |
| 11/12 | arm64: add pmd_mkclean for THParch/ | +1 | 0 replies | |
| 12/12 | mm: don't split THP page when syscall is calledinclude/ mm/ mm/ | +92 | 0 replies |
Reviews trailers per patch
6 of 12 patches have a Reviewed-by or Acked-by.
| Patch | Hugh Dickins | Minchan Kim | Michal Hocko | Max Filippov |
|---|---|---|---|---|
| 1/12 | A-b A-b | A-b A-b | ||
| 2/12 | A-b | |||
| 3/12 | A-b | A-b | ||
| 4/12 | A-b | A-b | ||
| 5/12 | A-b | A-b | ||
| 6/12 | A-b | |||
| 7/12 | ||||
| 8/12 | ||||
| 9/12 | ||||
| 10/12 | ||||
| 11/12 | ||||
| 12/12 |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes. Scroll the table sideways for all 4 reviewers.
Cover letter [PATCH v5 00/12] MADV_FREE support
In v4, Andrew wanted to settle in old basic MADV_FREE and introduces new stuffs(ie, lazyfree LRU, swapless support and lazyfreeness) later so this version doesn't include them.
I have been tested it on mmotm-2015-11-25-17-08 with additional patch[1] from Kirill to prevent BUG_ON which he didn't send to linux-mm yet as formal patch. With it, I couldn't find any problem so far.
Note that this version is based on THP refcount redesign so I needed some modification on MADV_FREE because split_huge_pmd doesn't split a THP page any more and pmd_trans_huge(pmd) is not enough to guarantee the page is not THP page.
As well, for MAVD_FREE lazy-split, THP split should respect pmd's dirtiness rather than marking ptes of all subpages dirty unconditionally. Please, review last patch in this patchset.
mm: don't split THP page when syscall is called
[1] https://lkml.org/lkml/2015/11/17/134
git: git://git.kernel.org/pub/scm/linux/kernel/git/minchan/linux.git
branch: mm/madv_free-v4.4-rc2-mmotm-2015-11-25-17-08-v5r2
In this stage, I don't think we need to write man page. It could be done after solid policy and implementation.
* Change from v4
* drop lazyfree LRU
* drop swapless support
* drop lazyfreeness
* rebase on recent mmotom with THP refcount redesign
* Change from v3
* some bug fix
* code refactoring
* lazyfree reclaim logic change
* reordering patch
* Change from v2
* vm_lazyfreeness tuning knob
* add new LRU list - Johannes, Shaohua
* support swapless - Johannes
* Change from v1
* Don't do unnecessary TLB flush - Shaohua
* Added Acked-by - Hugh, Michal
* Merge deactivate_page and deactivate_file_page
* Add pmd_dirty/pmd_mkclean patches for several arches
* Add lazy THP split patch
* Drop [email protected] - Delivery Failure
Chen Gang (1):
arch: uapi: asm: mman.h: Let MADV_FREE have same value for all
architectures
Minchan Kim (11):
mm: support madvise(MADV_FREE)
mm: define MADV_FREE for some arches
mm: free swp_entry in madvise_free
mm: move lazily freed pages to inactive list
mm: mark stable page dirty in KSM
x86: add pmd_[dirty|mkclean] for THP
sparc: add pmd_[dirty|mkclean] for THP
powerpc: add pmd_[dirty|mkclean] for THP
arm: add pmd_mkclean for THP
arm64: add pmd_mkclean for THP
mm: don't split THP page when syscall is called
arch/alpha/include/uapi/asm/mman.h | 2 + arch/arm/include/asm/pgtable-3level.h | 1 + arch/arm64/include/asm/pgtable.h | 1 + arch/mips/include/uapi/asm/mman.h | 2 + arch/parisc/include/uapi/asm/mman.h | 2 + arch/powerpc/include/asm/pgtable-ppc64.h | 2 + arch/sparc/include/asm/pgtable_64.h | 9 ++ arch/x86/include/asm/pgtable.h | 5 + arch/xtensa/include/uapi/asm/mman.h | 2 + include/linux/huge_mm.h | 3 + include/linux/rmap.h | 1 + include/linux/swap.h | 1 + include/linux/vm_event_item.h | 1 + include/uapi/asm-generic/mman-common.h | 1 + mm/huge_memory.c | 87 +++++++++++++- mm/ksm.c | 6 + mm/madvise.c | 199 +++++++++++++++++++++++++++++++ mm/rmap.c | 8 ++ mm/swap.c | 44 +++++++ mm/swap_state.c | 5 +- mm/vmscan.c | 10 +- mm/vmstat.c | 1 + 22 files changed, 383 insertions(+), 10 deletions(-)
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