Merging upstream version 6.8.9.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 34 insertions, 30 deletions

diff --git a/mm/migrate_device.c b/mm/migrate_device.c
index 8ac1f79f75..b6c27c76e1 100644
--- a/mm/migrate_device.c
+++ b/mm/migrate_device.c
@@ -107,6 +107,7 @@ again:
 
 	for (; addr < end; addr += PAGE_SIZE, ptep++) {
 		unsigned long mpfn = 0, pfn;
+		struct folio *folio;
 		struct page *page;
 		swp_entry_t entry;
 		pte_t pte;
@@ -168,41 +169,43 @@ again:
 		}
 
 		/*
-		 * By getting a reference on the page we pin it and that blocks
+		 * By getting a reference on the folio we pin it and that blocks
 		 * any kind of migration. Side effect is that it "freezes" the
 		 * pte.
 		 *
-		 * We drop this reference after isolating the page from the lru
-		 * for non device page (device page are not on the lru and thus
+		 * We drop this reference after isolating the folio from the lru
+		 * for non device folio (device folio are not on the lru and thus
 		 * can't be dropped from it).
 		 */
-		get_page(page);
+		folio = page_folio(page);
+		folio_get(folio);
 
 		/*
-		 * We rely on trylock_page() to avoid deadlock between
+		 * We rely on folio_trylock() to avoid deadlock between
 		 * concurrent migrations where each is waiting on the others
-		 * page lock. If we can't immediately lock the page we fail this
+		 * folio lock. If we can't immediately lock the folio we fail this
 		 * migration as it is only best effort anyway.
 		 *
-		 * If we can lock the page it's safe to set up a migration entry
-		 * now. In the common case where the page is mapped once in a
+		 * If we can lock the folio it's safe to set up a migration entry
+		 * now. In the common case where the folio is mapped once in a
 		 * single process setting up the migration entry now is an
 		 * optimisation to avoid walking the rmap later with
 		 * try_to_migrate().
 		 */
-		if (trylock_page(page)) {
+		if (folio_trylock(folio)) {
 			bool anon_exclusive;
 			pte_t swp_pte;
 
 			flush_cache_page(vma, addr, pte_pfn(pte));
-			anon_exclusive = PageAnon(page) && PageAnonExclusive(page);
+			anon_exclusive = folio_test_anon(folio) &&
+					  PageAnonExclusive(page);
 			if (anon_exclusive) {
 				pte = ptep_clear_flush(vma, addr, ptep);
 
-				if (page_try_share_anon_rmap(page)) {
+				if (folio_try_share_anon_rmap_pte(folio, page)) {
 					set_pte_at(mm, addr, ptep, pte);
-					unlock_page(page);
-					put_page(page);
+					folio_unlock(folio);
+					folio_put(folio);
 					mpfn = 0;
 					goto next;
 				}
@@ -214,7 +217,7 @@ again:
 
 			/* Set the dirty flag on the folio now the pte is gone. */
 			if (pte_dirty(pte))
-				folio_mark_dirty(page_folio(page));
+				folio_mark_dirty(folio);
 
 			/* Setup special migration page table entry */
 			if (mpfn & MIGRATE_PFN_WRITE)
@@ -248,16 +251,16 @@ again:
 
 			/*
 			 * This is like regular unmap: we remove the rmap and
-			 * drop page refcount. Page won't be freed, as we took
-			 * a reference just above.
+			 * drop the folio refcount. The folio won't be freed, as
+			 * we took a reference just above.
 			 */
-			page_remove_rmap(page, vma, false);
-			put_page(page);
+			folio_remove_rmap_pte(folio, page, vma);
+			folio_put(folio);
 
 			if (pte_present(pte))
 				unmapped++;
 		} else {
-			put_page(page);
+			folio_put(folio);
 			mpfn = 0;
 		}
 
@@ -564,6 +567,7 @@ static void migrate_vma_insert_page(struct migrate_vma *migrate,
 				    struct page *page,
 				    unsigned long *src)
 {
+	struct folio *folio = page_folio(page);
 	struct vm_area_struct *vma = migrate->vma;
 	struct mm_struct *mm = vma->vm_mm;
 	bool flush = false;
@@ -596,17 +600,17 @@ static void migrate_vma_insert_page(struct migrate_vma *migrate,
 		goto abort;
 	if (unlikely(anon_vma_prepare(vma)))
 		goto abort;
-	if (mem_cgroup_charge(page_folio(page), vma->vm_mm, GFP_KERNEL))
+	if (mem_cgroup_charge(folio, vma->vm_mm, GFP_KERNEL))
 		goto abort;
 
 	/*
-	 * The memory barrier inside __SetPageUptodate makes sure that
-	 * preceding stores to the page contents become visible before
+	 * The memory barrier inside __folio_mark_uptodate makes sure that
+	 * preceding stores to the folio contents become visible before
 	 * the set_pte_at() write.
 	 */
-	__SetPageUptodate(page);
+	__folio_mark_uptodate(folio);
 
-	if (is_device_private_page(page)) {
+	if (folio_is_device_private(folio)) {
 		swp_entry_t swp_entry;
 
 		if (vma->vm_flags & VM_WRITE)
@@ -617,8 +621,8 @@ static void migrate_vma_insert_page(struct migrate_vma *migrate,
 						page_to_pfn(page));
 		entry = swp_entry_to_pte(swp_entry);
 	} else {
-		if (is_zone_device_page(page) &&
-		    !is_device_coherent_page(page)) {
+		if (folio_is_zone_device(folio) &&
+		    !folio_is_device_coherent(folio)) {
 			pr_warn_once("Unsupported ZONE_DEVICE page type.\n");
 			goto abort;
 		}
@@ -652,10 +656,10 @@ static void migrate_vma_insert_page(struct migrate_vma *migrate,
 		goto unlock_abort;
 
 	inc_mm_counter(mm, MM_ANONPAGES);
-	page_add_new_anon_rmap(page, vma, addr);
-	if (!is_zone_device_page(page))
-		lru_cache_add_inactive_or_unevictable(page, vma);
-	get_page(page);
+	folio_add_new_anon_rmap(folio, vma, addr);
+	if (!folio_is_zone_device(folio))
+		folio_add_lru_vma(folio, vma);
+	folio_get(folio);
 
 	if (flush) {
 		flush_cache_page(vma, addr, pte_pfn(orig_pte));