+ khugepaged-refactor-trace_mm_khugepaged_scan_pmd-to-take-folio-instead-of-page.patch added to mm-new branch

[Andrew Morton <akpm@linux-foundation.org>]

The patch titled
     Subject: khugepaged: refactor trace_mm_khugepaged_scan_pmd() to take folio instead of page
has been added to the -mm mm-new branch.  Its filename is
     khugepaged-refactor-trace_mm_khugepaged_scan_pmd-to-take-folio-instead-of-page.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/khugepaged-refactor-trace_mm_khugepaged_scan_pmd-to-take-folio-instead-of-page.patch

This patch will later appear in the mm-new branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Fan Ni <fan.ni@samsung.com>
Subject: khugepaged: refactor trace_mm_khugepaged_scan_pmd() to take folio instead of page
Date: Fri, 18 Apr 2025 11:34:21 -0700

trace_mm_khugepaged_scan_pmd() is only called in
hpage_collapse_scan_pmd(), where the head page of a folio is passed in, so
refactor it to take folio directly.

Link: https://lkml.kernel.org/r/20250418183920.273154-2-nifan.cxl@gmail.com
Signed-off-by: Fan Ni <fan.ni@samsung.com>
Cc: Adam Manzanares <a.manzanares@samsung.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Luis Chamberalin <mcgrof@kernel.org>
Cc: Mariano Pache <npache@redhat.com>
Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Yang Shi <yang@os.amperecomputing.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/trace/events/huge_memory.h |    6 +++---
 mm/khugepaged.c                    |    2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

--- a/include/trace/events/huge_memory.h~khugepaged-refactor-trace_mm_khugepaged_scan_pmd-to-take-folio-instead-of-page
+++ a/include/trace/events/huge_memory.h
@@ -55,10 +55,10 @@ SCAN_STATUS
 
 TRACE_EVENT(mm_khugepaged_scan_pmd,
 
-	TP_PROTO(struct mm_struct *mm, struct page *page, bool writable,
+	TP_PROTO(struct mm_struct *mm, struct folio *folio, bool writable,
 		 int referenced, int none_or_zero, int status, int unmapped),
 
-	TP_ARGS(mm, page, writable, referenced, none_or_zero, status, unmapped),
+	TP_ARGS(mm, folio, writable, referenced, none_or_zero, status, unmapped),
 
 	TP_STRUCT__entry(
 		__field(struct mm_struct *, mm)
@@ -72,7 +72,7 @@ TRACE_EVENT(mm_khugepaged_scan_pmd,
 
 	TP_fast_assign(
 		__entry->mm = mm;
-		__entry->pfn = page ? page_to_pfn(page) : -1;
+		__entry->pfn = folio ? folio_pfn(folio) : -1;
 		__entry->writable = writable;
 		__entry->referenced = referenced;
 		__entry->none_or_zero = none_or_zero;
--- a/mm/khugepaged.c~khugepaged-refactor-trace_mm_khugepaged_scan_pmd-to-take-folio-instead-of-page
+++ a/mm/khugepaged.c
@@ -1435,7 +1435,7 @@ out_unmap:
 		*mmap_locked = false;
 	}
 out:
-	trace_mm_khugepaged_scan_pmd(mm, &folio->page, writable, referenced,
+	trace_mm_khugepaged_scan_pmd(mm, folio, writable, referenced,
 				     none_or_zero, result, unmapped);
 	return result;
 }
_

Patches currently in -mm which might be from fan.ni@samsung.com are

mm-hugetlb-refactor-unmap_ref_private-to-take-folio-instead-of-page.patch
mm-hugetlb-refactor-unmap_hugepage_range-to-take-folio-instead-of-page.patch
mm-hugetlb-refactor-__unmap_hugepage_range-to-take-folio-instead-of-page.patch
mm-convert-free_page_and_swap_cache-to-free_folio_and_swap_cache.patch
khugepaged-refactor-trace_mm_collapse_huge_page_isolate-to-take-folio-instead-of-page.patch
khugepaged-refactor-trace_mm_khugepaged_scan_pmd-to-take-folio-instead-of-page.patch