Re: [PATCH v3 0/3] page_owner: Fix refcount imbalance

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Hi Oscar,

On 26/03/2024 07:30, Oscar Salvador wrote:
This series consists of a refactoring/correctness of updating the metadata
of tail pages and a couple of fixups for the refcounting part.

 From this series on, instead of counting the stacks, we count the outstanding
nr_base_pages each stack has, which gives us a much better memory overview.
The other fixup is for the migration part.

A more detailed explanation can be found in the changelog of the respective
patches.

Oscar Salvador (3):
   mm,page_owner: Update metada for tail pages
   mm,page_owner: Fix refcount imbalance
   mm,page_owner: Fix accounting of pages when migrating

  Documentation/mm/page_owner.rst |  73 +++++++------
  mm/page_owner.c                 | 184 +++++++++++++++++++-------------
  2 files changed, 146 insertions(+), 111 deletions(-)


This fixes the following report from syzbot: https://lore.kernel.org/linux-riscv/00000000000070a2660614b83885@xxxxxxxxxx/T/#t

So you can add:

Tested-by: Alexandre Ghiti <alexghiti@xxxxxxxxxxxx>

Thanks,

Alex





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