Continue the shrinkage of the struct page definition by getting rid of the
'first tail page' fields. I originally did this patch set before Hugh's
rewrite of the subpages_mapcount, so it needed substantial updates;
hope I didn't miss anything.
I hope you like the new names for compound_mapcount and
subpages_mapcount.
Matthew Wilcox (Oracle) (22):
mm: Remove folio_pincount_ptr() and head_compound_pincount()
mm: Convert head_subpages_mapcount() into folio_nr_pages_mapped()
doc: Clarify refcount section by referring to folios & pages
mm: Convert total_compound_mapcount() to folio_total_mapcount()
mm: Convert page_remove_rmap() to use a folio internally
mm: Convert page_add_anon_rmap() to use a folio internally
mm: Convert page_add_file_rmap() to use a folio internally
mm: Add folio_add_new_anon_rmap()
page_alloc: Use folio fields directly
mm: Use a folio in hugepage_add_anon_rmap() and
hugepage_add_new_anon_rmap()
mm: Use entire_mapcount in __page_dup_rmap()
mm/debug: Remove call to head_compound_mapcount()
hugetlb: Remove uses of folio_mapcount_ptr
mm: Convert page_mapcount() to use folio_entire_mapcount()
mm: Remove head_compound_mapcount() and _ptr functions
mm: Reimplement compound_order()
mm: Reimplement compound_nr()
mm: Convert set_compound_page_dtor() and set_compound_order() to
folios
mm: Convert is_transparent_hugepage() to use a folio
mm: Convert destroy_large_folio() to use folio_dtor
hugetlb: Remove uses of compound_dtor and compound_nr
mm: Remove 'First tail page' members from struct page
Documentation/core-api/pin_user_pages.rst | 29 ++--
Documentation/mm/transhuge.rst | 18 +--
include/linux/mm.h | 141 ++++++++----------
include/linux/mm_types.h | 53 +------
include/linux/rmap.h | 11 +-
kernel/crash_core.c | 4 +-
mm/debug.c | 8 +-
mm/folio-compat.c | 8 ++
mm/gup.c | 8 +-
mm/huge_memory.c | 12 +-
mm/hugetlb.c | 24 ++--
mm/internal.h | 18 +++
mm/page_alloc.c | 23 +--
mm/rmap.c | 167 +++++++++++-----------
14 files changed, 250 insertions(+), 274 deletions(-)
--
2.35.1
