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| author |   David Hildenbrand <david@redhat.com> | 2022-08-25 18:46:59 +0200 |
|---|---|---|
| committer |   Andrew Morton <akpm@linux-foundation.org> | 2022-09-26 19:46:28 -0700 |
| commit | 7014887a01587d8c50871d5985cd572ca08b29c0 (patch) | |
| tree | 1c31b3cfa360f1731c793624354e644ccdfa9278 /include/linux/mm_types.h | |
| parent | mm/gup: use gup_can_follow_protnone() also in GUP-fast (diff) | |
| download | linux-dev-7014887a01587d8c50871d5985cd572ca08b29c0.tar.xz linux-dev-7014887a01587d8c50871d5985cd572ca08b29c0.zip | |
mm: fixup documentation regarding pte_numa() and PROT_NUMA
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@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Peter Xu <peterx@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux/mm_types.h')
| -rw-r--r-- | include/linux/mm_types.h | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 5e32211cb5a9..26573ba485f3 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -614,22 +614,22 @@ 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 |