lkml.org 
[lkml]   [2023]   [Sep]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH v2 0/5] Use nth_page() in place of direct struct page manipulation
Date
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-20230906

Changes from v1:
1. Separated first patch into three and add Fixes for better backport.
2. Collected Reviewed-by.

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 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(-)

--
2.40.1

\
 
 \ /
  Last update: 2023-09-06 17:04    [W:0.274 / U:0.040 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site