mbox series

[v3,0/5] Use nth_page() in place of direct struct page manipulation

Message ID 20230913201248.452081-1-zi.yan@sent.com
Headers
Series Use nth_page() in place of direct struct page manipulation |

Message

Zi Yan Sept. 13, 2023, 8:12 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-20230913

Changes:

From v2:
1. Fixed the subject and the commit log of Patch 3 (David Hildenbrand)

From v1:
1. Separated first patch into three and add Fixes for better backport.

Zi Yan (5):
  mm/cma: use nth_page() in place of direct struct page manipulation.
  mm/hugetlb: use nth_page() in place of direct struct page
    manipulation.
  mm/memory_hotplug: use pfn math 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(-)