The patch titled
Subject: mm: fixup documentation regarding pte_numa() and PROT_NUMA
has been added to the -mm mm-unstable branch. Its filename is
mm-fixup-documentation-regarding-pte_numa-and-prot_numa.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-fixup-documentation-regarding-pte_numa-and-prot_numa.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: David Hildenbrand <david@xxxxxxxxxx>
Subject: mm: fixup documentation regarding pte_numa() and PROT_NUMA
Date: Thu, 25 Aug 2022 18:46:59 +0200
pte_numa() no longer exists -- replaced by pte_protnone() -- and PROT_NUMA
probably never existed: MM_CP_PROT_NUMA also ends up using PROT_NONE.
Let's fixup the doc.
Link: https://lkml.kernel.org/r/20220825164659.89824-4-david@xxxxxxxxxx
Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Jason Gunthorpe <jgg@xxxxxxxxxx>
Cc: John Hubbard <jhubbard@xxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Peter Xu <peterx@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/mm_types.h | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
--- a/include/linux/mm_types.h~mm-fixup-documentation-regarding-pte_numa-and-prot_numa
+++ a/include/linux/mm_types.h
@@ -616,22 +616,22 @@ struct mm_struct {
#endif
#ifdef CONFIG_NUMA_BALANCING
/*
- * numa_next_scan is the next time that the PTEs will be marked
- * pte_numa. NUMA hinting faults will gather statistics and
- * migrate pages to new nodes if necessary.
+ * numa_next_scan is the next time that PTEs will be remapped
+ * PROT_NONE to trigger NUMA hinting faults; such faults gather
+ * statistics and migrate pages to new nodes if necessary.
*/
unsigned long numa_next_scan;
- /* Restart point for scanning and setting pte_numa */
+ /* Restart point for scanning and remapping PTEs. */
unsigned long numa_scan_offset;
- /* numa_scan_seq prevents two threads setting pte_numa */
+ /* numa_scan_seq prevents two threads remapping PTEs. */
int numa_scan_seq;
#endif
/*
* An operation with batched TLB flushing is going on. Anything
* that can move process memory needs to flush the TLB when
- * moving a PROT_NONE or PROT_NUMA mapped page.
+ * moving a PROT_NONE mapped page.
*/
atomic_t tlb_flush_pending;
#ifdef CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH
_
Patches currently in -mm which might be from david@xxxxxxxxxx are
mm-gup-replace-foll_numa-by-gup_can_follow_protnone.patch
mm-gup-use-gup_can_follow_protnone-also-in-gup-fast.patch
mm-fixup-documentation-regarding-pte_numa-and-prot_numa.patch
