Commit 7014887a authored by David Hildenbrand's avatar David Hildenbrand Committed by Andrew Morton
Browse files

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: default avatarDavid 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: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 0cf45986

include/linux/mm_types.h

+6 −6
Original line number Diff line number Diff line
@@ -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