mm: convert destroy_compound_page() to destroy_large_folio()

All callers now have a folio, so push the folio->page conversion
down to this function.

Link: https://lkml.kernel.org/r/20220617175020.717127-20-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 29a124010cf7aaf7569174fdcb57e69d3281596c..f6699b11522a7edc340ff05076d5825311a80942 100644 (file)
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -924,10 +924,12 @@ static inline void set_compound_page_dtor(struct page *page,
        page[1].compound_dtor = compound_dtor;
 }
 
-static inline void destroy_compound_page(struct page *page)
+static inline void destroy_large_folio(struct folio *folio)
 {
-       VM_BUG_ON_PAGE(page[1].compound_dtor >= NR_COMPOUND_DTORS, page);
-       compound_page_dtors[page[1].compound_dtor](page);
+       enum compound_dtor_id dtor = folio_page(folio, 1)->compound_dtor;
+
+       VM_BUG_ON_FOLIO(dtor >= NR_COMPOUND_DTORS, folio);
+       compound_page_dtors[dtor](&folio->page);
 }
 
 static inline int head_compound_pincount(struct page *head)

diff --git a/mm/swap.c b/mm/swap.c
index 5f6caa6515992745ac3c83dcb1b134cf84d92fef..1f563d857768587810e6000bbb73749bc4c834c2 100644 (file)
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -115,7 +115,7 @@ static void __folio_put_large(struct folio *folio)
         */
        if (!folio_test_hugetlb(folio))
                __page_cache_release(folio);
-       destroy_compound_page(&folio->page);
+       destroy_large_folio(folio);
 }
 
 void __folio_put(struct folio *folio)

diff --git a/mm/vmscan.c b/mm/vmscan.c
index 705ac3103aa063f93906bd6defda8f3d4a6ea613..77fc0b0fedb1256443430c488f450317d649a20a 100644 (file)
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1985,7 +1985,7 @@ free_it:
                 * appear not as the counts should be low
                 */
                if (unlikely(folio_test_large(folio)))
-                       destroy_compound_page(&folio->page);
+                       destroy_large_folio(folio);
                else
                        list_add(&folio->lru, &free_pages);
                continue;
@@ -2354,7 +2354,7 @@ static unsigned int move_pages_to_lru(struct lruvec *lruvec,
 
                        if (unlikely(folio_test_large(folio))) {
                                spin_unlock_irq(&lruvec->lru_lock);
-                               destroy_compound_page(&folio->page);
+                               destroy_large_folio(folio);
                                spin_lock_irq(&lruvec->lru_lock);
                        } else
                                list_add(&folio->lru, &folios_to_free);