diff --git a/include/linux/mm.h b/include/linux/mm.h
index 63d573781973..939386e0aeda 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1000,7 +1000,7 @@ struct inode;
  * compound_order() can be called without holding a reference, which means
  * that niceties like page_folio() don't work.  These callers should be
  * prepared to handle wild return values.  For example, PG_head may be
- * set before _folio_order is initialised, or this may be a tail page.
+ * set before the order is initialised, or this may be a tail page.
  * See compaction.c for some good examples.
  */
 static inline unsigned int compound_order(struct page *page)
@@ -1009,7 +1009,7 @@ static inline unsigned int compound_order(struct page *page)
 
 	if (!test_bit(PG_head, &folio->flags))
 		return 0;
-	return folio->_folio_order;
+	return folio->_flags_1 & 0xff;
 }
 
 /**
@@ -1025,7 +1025,7 @@ static inline unsigned int folio_order(struct folio *folio)
 {
 	if (!folio_test_large(folio))
 		return 0;
-	return folio->_folio_order;
+	return folio->_flags_1 & 0xff;
 }
 
 #include <linux/huge_mm.h>
@@ -1996,7 +1996,7 @@ static inline long folio_nr_pages(struct folio *folio)
 #ifdef CONFIG_64BIT
 	return folio->_folio_nr_pages;
 #else
-	return 1L << folio->_folio_order;
+	return 1L << (folio->_flags_1 & 0xff);
 #endif
 }
 
@@ -2014,7 +2014,7 @@ static inline unsigned long compound_nr(struct page *page)
 #ifdef CONFIG_64BIT
 	return folio->_folio_nr_pages;
 #else
-	return 1L << folio->_folio_order;
+	return 1L << (folio->_flags_1 & 0xff);
 #endif
 }
 
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 1c5c2349c18e..40afb3bbc309 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -264,7 +264,6 @@ static inline struct page *encoded_page_ptr(struct encoded_page *page)
  * @_refcount: Do not access this member directly.  Use folio_ref_count()
  *    to find how many references there are to this folio.
  * @memcg_data: Memory Control Group data.
- * @_folio_order: Do not use directly, call folio_order().
  * @_entire_mapcount: Do not use directly, call folio_entire_mapcount().
  * @_nr_pages_mapped: Do not use directly, call folio_mapcount().
  * @_pincount: Do not use directly, call folio_maybe_dma_pinned().
@@ -316,8 +315,8 @@ struct folio {
 		struct {
 			unsigned long _flags_1;
 			unsigned long _head_1;
+			unsigned long _folio_avail;
 	/* public: */
-			unsigned char _folio_order;
 			atomic_t _entire_mapcount;
 			atomic_t _nr_pages_mapped;
 			atomic_t _pincount;
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 46fc05c648ff..638b0a96b4c5 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -184,7 +184,8 @@ enum pageflags {
 
 	/*
 	 * Flags only valid for compound pages.  Stored in first tail page's
-	 * flags word.
+	 * flags word.  Cannot use the first 8 flags or any flag marked as
+	 * PF_ANY.
 	 */
 
 	/* At least one page in this folio has the hwpoison flag set */
@@ -1081,8 +1082,8 @@ static __always_inline void __ClearPageAnonExclusive(struct page *page)
  * the CHECK_AT_FREE flags above, so need to be cleared.
  */
 #define PAGE_FLAGS_SECOND						\
-	(1UL << PG_has_hwpoisoned	| 1UL << PG_hugetlb |		\
-	 1UL << PG_large_rmappable)
+	(0xffUL /* order */		| 1UL << PG_has_hwpoisoned |	\
+	 1UL << PG_hugetlb		| 1UL << PG_large_rmappable)
 
 #define PAGE_FLAGS_PRIVATE				\
 	(1UL << PG_private | 1UL << PG_private_2)
diff --git a/kernel/crash_core.c b/kernel/crash_core.c
index 934dd86e19f5..693445e1f7f6 100644
--- a/kernel/crash_core.c
+++ b/kernel/crash_core.c
@@ -455,7 +455,6 @@ static int __init crash_save_vmcoreinfo_init(void)
 	VMCOREINFO_OFFSET(page, lru);
 	VMCOREINFO_OFFSET(page, _mapcount);
 	VMCOREINFO_OFFSET(page, private);
-	VMCOREINFO_OFFSET(folio, _folio_order);
 	VMCOREINFO_OFFSET(page, compound_head);
 	VMCOREINFO_OFFSET(pglist_data, node_zones);
 	VMCOREINFO_OFFSET(pglist_data, nr_zones);
diff --git a/mm/internal.h b/mm/internal.h
index 5c0daea731f3..d1d4bf4e63c0 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -407,7 +407,7 @@ static inline void folio_set_order(struct folio *folio, unsigned int order)
 	if (WARN_ON_ONCE(!order || !folio_test_large(folio)))
 		return;
 
-	folio->_folio_order = order;
+	folio->_flags_1 = (folio->_flags_1 & ~0xffUL) | order;
 #ifdef CONFIG_64BIT
 	folio->_folio_nr_pages = 1U << order;
 #endif