linux-kernel - [PATCH 0/5] Some khugepaged folio conversions

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Message-Id: <20231016200510.7387-1-vishal.moola@gmail.com>
Date:   Mon, 16 Oct 2023 13:05:05 -0700
From:   "Vishal Moola (Oracle)" <vishal.moola@...il.com>
To:     linux-mm@...ck.org
Cc:     linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
        shy828301@...il.com,
        "Vishal Moola (Oracle)" <vishal.moola@...il.com>
Subject: [PATCH 0/5] Some khugepaged folio conversions

This patchset converts a number of functions to use folios. This cleans
up some khugepaged code and removes a large number of hidden
compound_head() calls.

---

The first 2 patches break khugepaged max_ptes_shared selftests as the
functions now use folio_estimated_sharers() instead of page_mapcount().
This is expected, although I'm uncertain as to whether that's actually a
bad thing or not. Some performance testing/feedback would be appreciated
on that front.

Vishal Moola (Oracle) (5):
  mm/khugepaged: Convert __collapse_huge_page_isolate() to use folios
  mm/khugepaged: Convert hpage_collapse_scan_pmd() to use folios
  mm/khugepaged: Convert is_refcount_suitable() to use folios
  mm/khugepaged: Convert alloc_charge_hpage() to use folios
  mm/khugepaged: Convert collapse_pte_mapped_thp() to use folios

 mm/khugepaged.c | 145 +++++++++++++++++++++++-------------------------
 1 file changed, 69 insertions(+), 76 deletions(-)

-- 
2.40.1