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| author | David Hildenbrand <david@redhat.com> | 2024-08-16 12:32:46 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-09-03 21:15:37 -0700 |
| commit | d0b003ce97ad6518dea4b0ed70081df95de04179 (patch) | |
| tree | 88008767755a678f34bf3565fbb1f63d8b15cb2e /mm/rmap.c | |
| parent | cf54f310d0d313bce6505d010a555948b0ae0e2a (diff) | |
| download | lwn-d0b003ce97ad6518dea4b0ed70081df95de04179.tar.gz lwn-d0b003ce97ad6518dea4b0ed70081df95de04179.zip | |
mm/rmap: use folio->_mapcount for small folios
We have some cases left whereby we operate on small folios and still refer
to page->_mapcount. Let's just use folio->_mapcount instead, which
currently still overlays page->_mapcount, so no change.
This change will make it easier to later spot any remaining users of
page->_mapcount that target tail pages.
Link: https://lkml.kernel.org/r/20240816103246.719209-1-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/rmap.c')
| -rw-r--r-- | mm/rmap.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/rmap.c b/mm/rmap.c index a6b9cd0b2b18..1103a536e474 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -1165,7 +1165,7 @@ static __always_inline unsigned int __folio_add_rmap(struct folio *folio, switch (level) { case RMAP_LEVEL_PTE: if (!folio_test_large(folio)) { - nr = atomic_inc_and_test(&page->_mapcount); + nr = atomic_inc_and_test(&folio->_mapcount); break; } @@ -1535,7 +1535,7 @@ static __always_inline void __folio_remove_rmap(struct folio *folio, switch (level) { case RMAP_LEVEL_PTE: if (!folio_test_large(folio)) { - nr = atomic_add_negative(-1, &page->_mapcount); + nr = atomic_add_negative(-1, &folio->_mapcount); break; } |