This series is split out from the earlier larger series "mm: Generalize
HVO for HugeTLB and device DAX" [1]. It collects the first 19 patches of
that series as a standalone set of fixes and preparatory cleanups around
bootmem HugeTLB handling, sparse initialization ordering, and related
vmemmap setup.
The first patches fix a few bugs found while reviewing the existing
code, including incorrect bootmem HVO handling, wrong vmemmap
registration arguments, a powerpc compound-vmemmap tracking bug, and
too-late initialization of gigantic bootmem HugeTLB struct pages.
The rest of the series reorders early memory initialization so the
relevant zone state is available before sparse and HugeTLB boot-time
setup runs, then simplifies the remaining bootmem gigantic hugepage
allocation path and removes code made obsolete by that rework.
At a high level:
- patches [1-4] fix boot-time and arch-specific bugs
- patches [5-12] reorder and simplify sparse/mm/hugetlb early init
- patches [13-19] refactor bootmem gigantic hugepage allocation and
remove obsolete helpers and state
Changes since v2:
- patch 1: add a comment explaining why shared tail pages must be
initialized from gather_bootmem_prealloc() before
hugetlb_vmemmap_init() runs
- patch 1: update the stale sparse-vmemmap comment to point to
gather_bootmem_prealloc() as the shared-tail initialization site
- patch 2: collect Acked-by from Oscar Salvador
- patch 19: fold __init_page_from_nid() into __init_deferred_page()
instead of only making it static
[1]
https://lore.kernel.org/linux-mm/[email protected]/
Muchun Song (19):
mm/hugetlb: Fix boot panic with CONFIG_DEBUG_VM and HVO bootmem pages
mm/hugetlb_vmemmap: Fix __hugetlb_vmemmap_optimize_folios()
powerpc/mm: Fix wrong addr_pfn tracking in compound vmemmap population
mm/hugetlb: Initialize gigantic bootmem hugepage struct pages earlier
mm/mm_init: Simplify deferred_free_pages() migratetype init
mm/sparse: Panic on memmap and usemap allocation failure
mm/sparse: Move subsection_map_init() into sparse_init()
mm/mm_init: Defer sparse_init() until after zone initialization
mm/mm_init: Defer hugetlb reservation until after zone initialization
mm/mm_init: Remove set_pageblock_order() call from sparse_init()
mm/sparse: Move sparse_vmemmap_init_nid_late() into sparse_init_nid()
mm/hugetlb_cma: Validate hugetlb CMA range by zone at reserve time
mm/hugetlb: Refactor early boot gigantic hugepage allocation
mm/hugetlb: Free cross-zone bootmem gigantic pages after allocation
mm/hugetlb_vmemmap: Move bootmem HVO setup to early init
mm/hugetlb: Remove obsolete bootmem cross-zone checks
mm/sparse-vmemmap: Remove sparse_vmemmap_init_nid_late()
mm/hugetlb: Remove unused bootmem cma field
mm/mm_init: Fold __init_page_from_nid() into __init_deferred_page()
arch/powerpc/mm/book3s64/radix_pgtable.c | 7 +-
arch/powerpc/mm/hugetlbpage.c | 13 +-
include/linux/hugetlb.h | 24 +--
include/linux/mmzone.h | 7 -
mm/cma.c | 3 +-
mm/hugetlb.c | 259 +++++++++++------------
mm/hugetlb_cma.c | 44 ++--
mm/hugetlb_cma.h | 8 +-
mm/hugetlb_vmemmap.c | 94 ++------
mm/hugetlb_vmemmap.h | 5 -
mm/internal.h | 14 +-
mm/mm_init.c | 88 +++-----
mm/sparse-vmemmap.c | 26 ++-
mm/sparse.c | 48 +----
14 files changed, 241 insertions(+), 399 deletions(-)
base-commit: 08484c504b55a98bd100527fbe10a3caf55ff3ff
--
2.54.0
