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SubjectRe: [Patch v2 0/4] mm/mremap: cleanup move_page_tables() a little
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29.01.2020 03:26, Wei Yang пишет:
> move_page_tables() tries to move page table by PMD or PTE.
>
> The root reason is if it tries to move PMD, both old and new range should
> be PMD aligned. But current code calculate old range and new range
> separately. This leads to some redundant check and calculation.
>
> This cleanup tries to consolidate the range check in one place to reduce
> some extra range handling.
>
> v2:
> * remove 3rd patch which doesn't work on ARM platform. Thanks report from
> Dmitry Osipenko
>
> Wei Yang (4):
> mm/mremap: format the check in move_normal_pmd() same as
> move_huge_pmd()
> mm/mremap: it is sure to have enough space when extent meets
> requirement
> mm/mremap: calculate extent in one place
> mm/mremap: start addresses are properly aligned
>
> include/linux/huge_mm.h | 2 +-
> mm/huge_memory.c | 8 +-------
> mm/mremap.c | 17 ++++++-----------
> 3 files changed, 8 insertions(+), 19 deletions(-)
>

Hello Wei,

I haven't noticed any problems using the v2. Thank you very much for
addressing the problem!

Tested-by: Dmitry Osipenko <digetx@gmail.com>

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