[to-be-updated] f2fs-stop-using-pg_private.patch removed from -mm tree

[to-be-updated] f2fs-stop-using-pg_private.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: f2fs: stop using PG_private
has been removed from the -mm tree.  Its filename was
     f2fs-stop-using-pg_private.patch

This patch was dropped because an updated version will be issued

------------------------------------------------------
From: Zi Yan <ziy@nvidia.com>
Subject: f2fs: stop using PG_private
Date: Sun, 13 Sep 2026 22:24:04 -0400

f2fs sets its PAGE_PRIVATE_* flags in page->private and checking
page->private != NULL is equivalent to checking PG_private.  Change
PagePrivate() to page_private().  Meanwhile, in set_page_private_##name(),
page->private is first set to 0/NULL before an PAGE_PRIVATE_* flag is set,
but it can cause confusion when PG_private is removed and page->private !=
NULL is used instead.  Change it to initialize page->private to
PAGE_PRIVATE_NOT_POINTER instead and retain the original semantics.

It prepares for a future commit that removes PG_private.

No functional change intended.

Assisted-by: LLM
Link: https://lore.kernel.org/20260913-remove-pg_private-v4-6-848550f7574e@nvidia.com
Signed-off-by: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Usama Arif <usama.arif@linux.dev>
Acked-by: Chao Yu <chao@kernel.org>
Reviewed-by: David Hildenbrand (Arm) <david@kernel.org>
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
---

 fs/f2fs/f2fs.h |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/fs/f2fs/f2fs.h~f2fs-stop-using-pg_private
+++ a/fs/f2fs/f2fs.h
@@ -2691,7 +2691,7 @@ static inline bool folio_test_f2fs_##nam
 }									\
 static inline bool page_private_##name(struct page *page) \
 { \
-	return PagePrivate(page) && \
+	return page_private(page) && \
 		test_bit(PAGE_PRIVATE_NOT_POINTER, &page_private(page)) && \
 		test_bit(PAGE_PRIVATE_##flagname, &page_private(page)); \
 }
@@ -2710,9 +2710,9 @@ static inline void folio_set_f2fs_##name
 }									\
 static inline void set_page_private_##name(struct page *page) \
 { \
-	if (!PagePrivate(page)) \
-		attach_page_private(page, (void *)0); \
-	set_bit(PAGE_PRIVATE_NOT_POINTER, &page_private(page)); \
+	if (!page_private(page)) \
+		attach_page_private(page, \
+				(void *)BIT(PAGE_PRIVATE_NOT_POINTER)); \
 	set_bit(PAGE_PRIVATE_##flagname, &page_private(page)); \
 }
 
_

Patches currently in -mm which might be from ziy@nvidia.com are

f2fs-convert-the-private-flag-helpers-to-folio-only.patch
erofs-mm-pagemap-add-readahead_folio_last-to-avoid-folio-private.patch
erofs-use-folio_attach-detach_private-instead-of-direct-assignment.patch
mm-page-flags-check-page-folio-private-instead-of-pg_private.patch
treewide-remove-folio_set-clear_private-usage.patch
ceph-replace-pageprivate-with-page_private.patch
md-md-bitmap-replace-pageprivate-with-page_private.patch
buffer-replace-page_buffer-with-page_private-and-delete-it.patch
treewide-remove-pageprivate-and-pg_private-from-comments-and-docs.patch
mm-page-flags-remove-pg_private.patch
usb-gadgetfs-do-not-warn-about-excessively-large-memory-allocations.patch