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[0/3] Use nth_page() in place of direct struct page manipulation

Message ID 20230830182753.55367-1-zi.yan@sent.com (mailing list archive)
Headers show
Series Use nth_page() in place of direct struct page manipulation | expand

Message

Zi Yan Aug. 30, 2023, 6:27 p.m. UTC 
From: Zi Yan <ziy@nvidia.com>

On SPARSEMEM without VMEMMAP, struct page is not guaranteed to be
contiguous, since each memory section's memmap might be allocated
independently. hugetlb pages can go beyond a memory section size, thus
direct struct page manipulation on hugetlb pages/subpages might give
wrong struct page. Kernel provides nth_page() to do the manipulation
properly. Use that whenever code can see hugetlb pages.

The patches are on top of next-20230830.

Zi Yan (3):
  mm: use nth_page() in place of direct struct page manipulation.
  fs: use nth_page() in place of direct struct page manipulation.
  mips: use nth_page() in place of direct struct page manipulation.

 arch/mips/mm/cache.c | 2 +-
 fs/hugetlbfs/inode.c | 4 ++--
 mm/cma.c             | 2 +-
 mm/hugetlb.c         | 2 +-
 mm/memory_hotplug.c  | 2 +-
 5 files changed, 6 insertions(+), 6 deletions(-)