Re: [PATCH] mm: hugetlb: kill set_huge_swap_pte_at()

On 6/27/22 20:04, Matthew Wilcox wrote:

On Mon, Jun 27, 2022 at 01:05:00PM +0530, Anshuman Khandual wrote:

quoted

quoted

For the swap entry of hugetlb, we need to remember that we should
call set_huge_swap_pte_at() instead of set_huge_pte_at() every

Which is intuitive, so what is the problem ?

The problem is that HugeTLB is DIFFERENT from the rest of the VM.

Agreed.

This has a huge cost in programmer time, which is infinitely more
valuable than the cycle shaving you're quibbling over.  We should take
any and every opportunity to make huge pages work the same way as THP
and order-0 pages.

Got it.

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