Re: [PATCH 00/17] Convert GUP to folios

[William Kucharski <william.kucharski@oracle.com>]

For the series:

Reviewed-by: William Kucharski <william.kucharski@oracle.com>

> On Jan 2, 2022, at 2:57 PM, Matthew Wilcox (Oracle) <willy@infradead.org> wrote:
> 
> This patch series is against my current folio for-next branch.  I know
> it won't apply to sfr's next tree, and it's not for-next material yet.
> I intend to submit it for 5.18 after I've rebased it to one of the
> 5.17-rc releases.
> 
> The overall effect of this (ignoring the primary "preparing for folios
> that are not PAGE or PMD sized" purpose) is to reduce the size of gup.o
> by ~700 bytes in the config I normally test with.
> 
> This patchset just converts existing implementations to use folios.
> There's no new API for consumers here to provide information in a more
> efficient (address, length) format.  That will be a separate patchset.
> 
> Matthew Wilcox (Oracle) (17):
>  mm: Add folio_put_refs()
>  mm: Add folio_pincount_available()
>  mm: Add folio_pincount_ptr()
>  mm: Convert page_maybe_dma_pinned() to use a folio
>  gup: Add try_get_folio()
>  mm: Remove page_cache_add_speculative() and
>    page_cache_get_speculative()
>  gup: Add gup_put_folio()
>  gup: Add try_grab_folio()
>  gup: Convert gup_pte_range() to use a folio
>  gup: Convert gup_hugepte() to use a folio
>  gup: Convert gup_huge_pmd() to use a folio
>  gup: Convert gup_huge_pud() to use a folio
>  gup: Convert gup_huge_pgd() to use a folio
>  gup: Convert for_each_compound_head() to gup_for_each_folio()
>  gup: Convert for_each_compound_range() to gup_for_each_folio_range()
>  mm: Add isolate_lru_folio()
>  gup: Convert check_and_migrate_movable_pages() to use a folio
> 
> arch/powerpc/include/asm/mmu_context.h |   1 -
> include/linux/mm.h                     |  58 +++--
> include/linux/mm_types.h               |   6 +
> include/linux/pagemap.h                |  11 -
> mm/folio-compat.c                      |   8 +
> mm/gup.c                               | 312 ++++++++++++-------------
> mm/hugetlb.c                           |   7 +-
> mm/internal.h                          |   3 +-
> mm/vmscan.c                            |  43 ++--
> 9 files changed, 222 insertions(+), 227 deletions(-)
> 
> -- 
> 2.33.0
> 
>