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| author | David Hildenbrand <david@redhat.com> | 2023-01-13 18:10:26 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-02-02 22:33:11 -0800 |
| commit | 950fe885a89770619e315f9b46301eebf0aab7b3 (patch) | |
| tree | e4f14a15fa22f1be3376ad771f26dbc6cfdf1d35 /mm/rmap.c | |
| parent | f5c3fe300c5b40ff9af5ce2c9dd9897e91ce5735 (diff) | |
| download | lwn-950fe885a89770619e315f9b46301eebf0aab7b3.tar.gz lwn-950fe885a89770619e315f9b46301eebf0aab7b3.zip | |
mm: remove __HAVE_ARCH_PTE_SWP_EXCLUSIVE
__HAVE_ARCH_PTE_SWP_EXCLUSIVE is now supported by all architectures that
support swp PTEs, so let's drop it.
Link: https://lkml.kernel.org/r/20230113171026.582290-27-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/rmap.c')
| -rw-r--r-- | mm/rmap.c | 11 |
1 files changed, 0 insertions, 11 deletions
diff --git a/mm/rmap.c b/mm/rmap.c index 073999f78adf..0d07c500fc86 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -1710,17 +1710,6 @@ static bool try_to_unmap_one(struct folio *folio, struct vm_area_struct *vma, page_vma_mapped_walk_done(&pvmw); break; } - /* - * Note: We *don't* remember if the page was mapped - * exclusively in the swap pte if the architecture - * doesn't support __HAVE_ARCH_PTE_SWP_EXCLUSIVE. In - * that case, swapin code has to re-determine that - * manually and might detect the page as possibly - * shared, for example, if there are other references on - * the page or if the page is under writeback. We made - * sure that there are no GUP pins on the page that - * would rely on it, so for GUP pins this is fine. - */ if (list_empty(&mm->mmlist)) { spin_lock(&mmlist_lock); if (list_empty(&mm->mmlist)) |