fs: Convert aops->write_end to take a folio

Most callers have a folio, and most implementations operate on a folio,
so remove the conversion from folio->page->folio to fit through this
interface.

Reviewed-by: Josef Bacik <[e-mail]>
Signed-off-by: Matthew Wilcox (Oracle) <[e-mail]>
Signed-off-by: Christian Brauner <[e-mail]>

Documentation/filesystems/locking.rst

···
 				struct page **pagep, void **fsdata);
 	int (*write_end)(struct file *, struct address_space *mapping,
 				loff_t pos, unsigned len, unsigned copied,
-				struct page *page, void *fsdata);
+				struct folio *folio, void *fsdata);
 	sector_t (*bmap)(struct address_space *, sector_t);
 	void (*invalidate_folio) (struct folio *, size_t start, size_t len);
 	bool (*release_folio)(struct folio *, gfp_t);

Documentation/filesystems/vfs.rst

···
 				struct page **pagep, void **fsdata);
 		int (*write_end)(struct file *, struct address_space *mapping,
 				 loff_t pos, unsigned len, unsigned copied,
-				 struct page *page, void *fsdata);
+				 struct folio *folio, void *fsdata);
 		sector_t (*bmap)(struct address_space *, sector_t);
 		void (*invalidate_folio) (struct folio *, size_t start, size_t len);
 		bool (*release_folio)(struct folio *, gfp_t);
···
 	called.  len is the original len passed to write_begin, and
 	copied is the amount that was able to be copied.
 
-	The filesystem must take care of unlocking the page and
-	releasing it refcount, and updating i_size.
+	The filesystem must take care of unlocking the folio,
+	decrementing its refcount, and updating i_size.
 
 	Returns < 0 on failure, otherwise the number of bytes (<=
 	'copied') that were able to be copied into pagecache.

block/fops.c

···
 }
 
 static int blkdev_write_end(struct file *file, struct address_space *mapping,
-		loff_t pos, unsigned len, unsigned copied, struct page *page,
+		loff_t pos, unsigned len, unsigned copied, struct folio *folio,
 		void *fsdata)
 {
-	struct folio *folio = page_folio(page);
 	int ret;
 	ret = block_write_end(file, mapping, pos, len, copied, folio, fsdata);
 

drivers/gpu/drm/i915/gem/i915_gem_shmem.c

···
 		kunmap_local(vaddr);
 
 		err = aops->write_end(obj->base.filp, mapping, offset, len,
-				      len - unwritten, page, data);
+				      len - unwritten, page_folio(page), data);
 		if (err < 0)
 			return err;
 
···
 		kunmap(page);
 
 		err = aops->write_end(file, file->f_mapping, offset, len, len,
-				      page, pgdata);
+				      page_folio(page), pgdata);
 		if (err < 0)
 			goto fail;
 

fs/affs/file.c

···
 
 static int affs_write_end(struct file *file, struct address_space *mapping,
 			  loff_t pos, unsigned int len, unsigned int copied,
-			  struct page *page, void *fsdata)
+			  struct folio *folio, void *fsdata)
 {
 	struct inode *inode = mapping->host;
 	int ret;
 
-	ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata);
+	ret = generic_write_end(file, mapping, pos, len, copied, folio, fsdata);
 
 	/* Clear Archived bit on file writes, as AmigaOS would do */
 	if (AFFS_I(inode)->i_protect & FIBF_ARCHIVED) {
···
 
 static int affs_write_end_ofs(struct file *file, struct address_space *mapping,
 				loff_t pos, unsigned len, unsigned copied,
-				struct page *page, void *fsdata)
+				struct folio *folio, void *fsdata)
 {
-	struct folio *folio = page_folio(page);
 	struct inode *inode = mapping->host;
 	struct super_block *sb = inode->i_sb;
 	struct buffer_head *bh, *prev_bh;
···
 
 		res = mapping->a_ops->write_begin(NULL, mapping, isize, 0, &page, &fsdata);
 		if (!res)
-			res = mapping->a_ops->write_end(NULL, mapping, isize, 0, 0, page, fsdata);
+			res = mapping->a_ops->write_end(NULL, mapping, isize, 0, 0, page_folio(page), fsdata);
 		else
 			inode->i_size = AFFS_I(inode)->mmu_private;
 		mark_inode_dirty(inode);

fs/bcachefs/fs-io-buffered.c

···
 
 int bch2_write_end(struct file *file, struct address_space *mapping,
 		   loff_t pos, unsigned len, unsigned copied,
-		   struct page *page, void *fsdata)
+		   struct folio *folio, void *fsdata)
 {
 	struct bch_inode_info *inode = to_bch_ei(mapping->host);
 	struct bch_fs *c = inode->v.i_sb->s_fs_info;
 	struct bch2_folio_reservation *res = fsdata;
-	struct folio *folio = page_folio(page);
 	unsigned offset = pos - folio_pos(folio);
 
 	lockdep_assert_held(&inode->v.i_rwsem);

fs/bcachefs/fs-io-buffered.h

···
 int bch2_write_begin(struct file *, struct address_space *, loff_t,
 		     unsigned, struct page **, void **);
 int bch2_write_end(struct file *, struct address_space *, loff_t,
-		   unsigned, unsigned, struct page *, void *);
+		   unsigned len, unsigned copied, struct folio *, void *);
 
 ssize_t bch2_write_iter(struct kiocb *, struct iov_iter *);
 

fs/buffer.c

···
 
 int generic_write_end(struct file *file, struct address_space *mapping,
 			loff_t pos, unsigned len, unsigned copied,
-			struct page *page, void *fsdata)
+			struct folio *folio, void *fsdata)
 {
-	struct folio *folio = page_folio(page);
 	struct inode *inode = mapping->host;
 	loff_t old_size = inode->i_size;
 	bool i_size_changed = false;
···
 	if (err)
 		goto out;
 
-	err = aops->write_end(NULL, mapping, size, 0, 0, page, fsdata);
+	err = aops->write_end(NULL, mapping, size, 0, 0, page_folio(page), fsdata);
 	BUG_ON(err > 0);
 
 out:
···
 			goto out;
 		zero_user(page, zerofrom, len);
 		err = aops->write_end(file, mapping, curpos, len, len,
-						page, fsdata);
+						page_folio(page), fsdata);
 		if (err < 0)
 			goto out;
 		BUG_ON(err != len);
···
 			goto out;
 		zero_user(page, zerofrom, len);
 		err = aops->write_end(file, mapping, curpos, len, len,
-						page, fsdata);
+						page_folio(page), fsdata);
 		if (err < 0)
 			goto out;
 		BUG_ON(err != len);

fs/ceph/addr.c

···
  */
 static int ceph_write_end(struct file *file, struct address_space *mapping,
 			  loff_t pos, unsigned len, unsigned copied,
-			  struct page *subpage, void *fsdata)
+			  struct folio *folio, void *fsdata)
 {
-	struct folio *folio = page_folio(subpage);
 	struct inode *inode = file_inode(file);
 	struct ceph_client *cl = ceph_inode_to_client(inode);
 	bool check_cap = false;

fs/ecryptfs/mmap.c

···
  * @pos: The file position
  * @len: The length of the data (unused)
  * @copied: The amount of data copied
- * @page: The eCryptfs page
+ * @folio: The eCryptfs folio
  * @fsdata: The fsdata (unused)
  */
 static int ecryptfs_write_end(struct file *file,
 			struct address_space *mapping,
 			loff_t pos, unsigned len, unsigned copied,
-			struct page *page, void *fsdata)
+			struct folio *folio, void *fsdata)
 {
-	struct folio *folio = page_folio(page);
 	pgoff_t index = pos >> PAGE_SHIFT;
 	unsigned from = pos & (PAGE_SIZE - 1);
 	unsigned to = from + copied;

fs/exfat/file.c

···
 
 		zero_user_segment(page, zerofrom, zerofrom + len);
 
-		err = ops->write_end(file, mapping, start, len, len, page, NULL);
+		err = ops->write_end(file, mapping, start, len, len, page_folio(page), NULL);
 		if (err < 0)
 			goto out;
 		start += len;

fs/exfat/inode.c

···
 
 static int exfat_write_end(struct file *file, struct address_space *mapping,
 		loff_t pos, unsigned int len, unsigned int copied,
-		struct page *pagep, void *fsdata)
+		struct folio *folio, void *fsdata)
 {
 	struct inode *inode = mapping->host;
 	struct exfat_inode_info *ei = EXFAT_I(inode);
 	int err;
 
-	err = generic_write_end(file, mapping, pos, len, copied, pagep, fsdata);
+	err = generic_write_end(file, mapping, pos, len, copied, folio, fsdata);
 
 	if (ei->i_size_aligned < i_size_read(inode)) {
 		exfat_fs_error(inode->i_sb,

fs/ext2/inode.c

···
 
 static int ext2_write_end(struct file *file, struct address_space *mapping,
 			loff_t pos, unsigned len, unsigned copied,
-			struct page *page, void *fsdata)
+			struct folio *folio, void *fsdata)
 {
 	int ret;
 
-	ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata);
+	ret = generic_write_end(file, mapping, pos, len, copied, folio, fsdata);
 	if (ret < len)
 		ext2_write_failed(mapping, pos + len);
 	return ret;

fs/ext4/inode.c

···
 static int ext4_write_end(struct file *file,
 			  struct address_space *mapping,
 			  loff_t pos, unsigned len, unsigned copied,
-			  struct page *page, void *fsdata)
+			  struct folio *folio, void *fsdata)
 {
-	struct folio *folio = page_folio(page);
 	handle_t *handle = ext4_journal_current_handle();
 	struct inode *inode = mapping->host;
 	loff_t old_size = inode->i_size;
···
 static int ext4_journalled_write_end(struct file *file,
 				     struct address_space *mapping,
 				     loff_t pos, unsigned len, unsigned copied,
-				     struct page *page, void *fsdata)
+				     struct folio *folio, void *fsdata)
 {
-	struct folio *folio = page_folio(page);
 	handle_t *handle = ext4_journal_current_handle();
 	struct inode *inode = mapping->host;
 	loff_t old_size = inode->i_size;
···
 static int ext4_da_write_end(struct file *file,
 			     struct address_space *mapping,
 			     loff_t pos, unsigned len, unsigned copied,
-			     struct page *page, void *fsdata)
+			     struct folio *folio, void *fsdata)
 {
 	struct inode *inode = mapping->host;
 	int write_mode = (int)(unsigned long)fsdata;
-	struct folio *folio = page_folio(page);
 
 	if (write_mode == FALL_BACK_TO_NONDELALLOC)
 		return ext4_write_end(file, mapping, pos,
-				      len, copied, &folio->page, fsdata);
+				      len, copied, folio, fsdata);
 
 	trace_ext4_da_write_end(inode, pos, len, copied);
 

fs/ext4/verity.c

···
 
 		memcpy_to_page(page, offset_in_page(pos), buf, n);
 
-		res = aops->write_end(NULL, mapping, pos, n, n, page, fsdata);
+		res = aops->write_end(NULL, mapping, pos, n, n, page_folio(page), fsdata);
 		if (res < 0)
 			return res;
 		if (res != n)

fs/f2fs/data.c

···
 static int f2fs_write_end(struct file *file,
 			struct address_space *mapping,
 			loff_t pos, unsigned len, unsigned copied,
-			struct page *page, void *fsdata)
+			struct folio *folio, void *fsdata)
 {
-	struct folio *folio = page_folio(page);
 	struct inode *inode = folio->mapping->host;
 
 	trace_f2fs_write_end(inode, pos, len, copied);

fs/f2fs/super.c

···
 		memcpy_to_page(page, offset, data, tocopy);
 
 		a_ops->write_end(NULL, mapping, off, tocopy, tocopy,
-						page, fsdata);
+						page_folio(page), fsdata);
 		offset = 0;
 		towrite -= tocopy;
 		off += tocopy;

fs/f2fs/verity.c

···
 
 		memcpy_to_page(page, offset_in_page(pos), buf, n);
 
-		res = aops->write_end(NULL, mapping, pos, n, n, page, fsdata);
+		res = aops->write_end(NULL, mapping, pos, n, n, page_folio(page), fsdata);
 		if (res < 0)
 			return res;
 		if (res != n)

fs/fat/inode.c

···
 
 static int fat_write_end(struct file *file, struct address_space *mapping,
 			loff_t pos, unsigned len, unsigned copied,
-			struct page *pagep, void *fsdata)
+			struct folio *folio, void *fsdata)
 {
 	struct inode *inode = mapping->host;
 	int err;
-	err = generic_write_end(file, mapping, pos, len, copied, pagep, fsdata);
+	err = generic_write_end(file, mapping, pos, len, copied, folio, fsdata);
 	if (err < len)
 		fat_write_failed(mapping, pos + len);
 	if (!(err < 0) && !(MSDOS_I(inode)->i_attrs & ATTR_ARCH)) {

fs/fuse/file.c

···
 
 static int fuse_write_end(struct file *file, struct address_space *mapping,
 		loff_t pos, unsigned len, unsigned copied,
-		struct page *page, void *fsdata)
+		struct folio *folio, void *fsdata)
 {
-	struct folio *folio = page_folio(page);
 	struct inode *inode = folio->mapping->host;
 
 	/* Haven't copied anything?  Skip zeroing, size extending, dirtying. */

fs/hfs/extent.c

···
 				&fsdata);
 		if (!res) {
 			res = generic_write_end(NULL, mapping, size + 1, 0, 0,
-					page, fsdata);
+					page_folio(page), fsdata);
 		}
 		if (res)
 			inode->i_size = HFS_I(inode)->phys_size;

fs/hfsplus/extents.c

···
 		if (res)
 			return;
 		res = generic_write_end(NULL, mapping, size, 0, 0,
-					page, fsdata);
+					page_folio(page), fsdata);
 		if (res < 0)
 			return;
 		mark_inode_dirty(inode);

fs/hostfs/hostfs_kern.c

···
 
 static int hostfs_write_end(struct file *file, struct address_space *mapping,
 			    loff_t pos, unsigned len, unsigned copied,
-			    struct page *page, void *fsdata)
+			    struct folio *folio, void *fsdata)
 {
-	struct folio *folio = page_folio(page);
 	struct inode *inode = mapping->host;
 	void *buffer;
 	size_t from = offset_in_folio(folio, pos);

fs/hpfs/file.c

···
 
 static int hpfs_write_end(struct file *file, struct address_space *mapping,
 			loff_t pos, unsigned len, unsigned copied,
-			struct page *pagep, void *fsdata)
+			struct folio *folio, void *fsdata)
 {
 	struct inode *inode = mapping->host;
 	int err;
-	err = generic_write_end(file, mapping, pos, len, copied, pagep, fsdata);
+	err = generic_write_end(file, mapping, pos, len, copied, folio, fsdata);
 	if (err < len)
 		hpfs_write_failed(mapping, pos + len);
 	if (!(err < 0)) {

fs/hugetlbfs/inode.c

···
 
 static int hugetlbfs_write_end(struct file *file, struct address_space *mapping,
 			loff_t pos, unsigned len, unsigned copied,
-			struct page *page, void *fsdata)
+			struct folio *folio, void *fsdata)
 {
 	BUG();
 	return -EINVAL;

fs/jffs2/file.c

···
 
 static int jffs2_write_end(struct file *filp, struct address_space *mapping,
 			loff_t pos, unsigned len, unsigned copied,
-			struct page *pg, void *fsdata);
+			struct folio *folio, void *fsdata);
 static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
 			loff_t pos, unsigned len,
 			struct page **pagep, void **fsdata);
···
 
 static int jffs2_write_end(struct file *filp, struct address_space *mapping,
 			loff_t pos, unsigned len, unsigned copied,
-			struct page *pg, void *fsdata)
+			struct folio *folio, void *fsdata)
 {
-	struct folio *folio = page_folio(pg);
 	/* Actually commit the write from the page cache page we're looking at.
 	 * For now, we write the full page out each time. It sucks, but it's simple
 	 */

fs/jfs/inode.c

···
 }
 
 static int jfs_write_end(struct file *file, struct address_space *mapping,
-		loff_t pos, unsigned len, unsigned copied, struct page *page,
+		loff_t pos, unsigned len, unsigned copied, struct folio *folio,
 		void *fsdata)
 {
 	int ret;
 
-	ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata);
+	ret = generic_write_end(file, mapping, pos, len, copied, folio, fsdata);
 	if (ret < len)
 		jfs_write_failed(mapping, pos + len);
 	return ret;

fs/libfs.c

···
  * @pos: 		"
  * @len: 		"
  * @copied: 		"
- * @page: 		"
+ * @folio: 		"
  * @fsdata: 		"
  *
- * simple_write_end does the minimum needed for updating a page after writing is
- * done. It has the same API signature as the .write_end of
+ * simple_write_end does the minimum needed for updating a folio after
+ * writing is done. It has the same API signature as the .write_end of
  * address_space_operations vector. So it can just be set onto .write_end for
  * FSes that don't need any other processing. i_mutex is assumed to be held.
  * Block based filesystems should use generic_write_end().
···
  */
 static int simple_write_end(struct file *file, struct address_space *mapping,
 			loff_t pos, unsigned len, unsigned copied,
-			struct page *page, void *fsdata)
+			struct folio *folio, void *fsdata)
 {
-	struct folio *folio = page_folio(page);
 	struct inode *inode = folio->mapping->host;
 	loff_t last_pos = pos + copied;
 

fs/namei.c

···
 	memcpy(page_address(page), symname, len-1);
 
 	err = aops->write_end(NULL, mapping, 0, len-1, len-1,
-							page, fsdata);
+						page_folio(page), fsdata);
 	if (err < 0)
 		goto fail;
 	if (err < len-1)

fs/nfs/file.c

···
 
 static int nfs_write_end(struct file *file, struct address_space *mapping,
 			 loff_t pos, unsigned len, unsigned copied,
-			 struct page *page, void *fsdata)
+			 struct folio *folio, void *fsdata)
 {
 	struct nfs_open_context *ctx = nfs_file_open_context(file);
-	struct folio *folio = page_folio(page);
 	unsigned offset = offset_in_folio(folio, pos);
 	int status;
 

fs/nilfs2/inode.c

···
 
 static int nilfs_write_end(struct file *file, struct address_space *mapping,
 			   loff_t pos, unsigned len, unsigned copied,
-			   struct page *page, void *fsdata)
+			   struct folio *folio, void *fsdata)
 {
 	struct inode *inode = mapping->host;
 	unsigned int start = pos & (PAGE_SIZE - 1);
 	unsigned int nr_dirty;
 	int err;
 
-	nr_dirty = nilfs_page_count_clean_buffers(page, start,
+	nr_dirty = nilfs_page_count_clean_buffers(&folio->page, start,
 						  start + copied);
-	copied = generic_write_end(file, mapping, pos, len, copied, page,
+	copied = generic_write_end(file, mapping, pos, len, copied, folio,
 				   fsdata);
 	nilfs_set_file_dirty(inode, nr_dirty);
 	err = nilfs_transaction_commit(inode->i_sb);

fs/ntfs3/file.c

···
 		zero_user_segment(page, zerofrom, PAGE_SIZE);
 
 		/* This function in any case puts page. */
-		err = ntfs_write_end(file, mapping, pos, len, len, page, NULL);
+		err = ntfs_write_end(file, mapping, pos, len, len, page_folio(page), NULL);
 		if (err < 0)
 			goto out;
 		pos += len;

fs/ntfs3/inode.c

···
  * ntfs_write_end - Address_space_operations::write_end.
  */
 int ntfs_write_end(struct file *file, struct address_space *mapping, loff_t pos,
-		   u32 len, u32 copied, struct page *page, void *fsdata)
+		   u32 len, u32 copied, struct folio *folio, void *fsdata)
 {
-	struct folio *folio = page_folio(page);
 	struct inode *inode = mapping->host;
 	struct ntfs_inode *ni = ntfs_i(inode);
 	u64 valid = ni->i_valid;
···
 		folio_unlock(folio);
 		folio_put(folio);
 	} else {
-		err = generic_write_end(file, mapping, pos, len, copied, page,
+		err = generic_write_end(file, mapping, pos, len, copied, folio,
 					fsdata);
 	}
 

fs/ntfs3/ntfs_fs.h

···
 int ntfs_write_begin(struct file *file, struct address_space *mapping,
 		     loff_t pos, u32 len, struct page **pagep, void **fsdata);
 int ntfs_write_end(struct file *file, struct address_space *mapping, loff_t pos,
-		   u32 len, u32 copied, struct page *page, void *fsdata);
+		   u32 len, u32 copied, struct folio *folio, void *fsdata);
 int ntfs3_write_inode(struct inode *inode, struct writeback_control *wbc);
 int ntfs_sync_inode(struct inode *inode);
 int ntfs_flush_inodes(struct super_block *sb, struct inode *i1,

fs/ocfs2/aops.c

···
 
 static int ocfs2_write_end(struct file *file, struct address_space *mapping,
 			   loff_t pos, unsigned len, unsigned copied,
-			   struct page *page, void *fsdata)
+			   struct folio *folio, void *fsdata)
 {
 	int ret;
 	struct inode *inode = mapping->host;

fs/orangefs/inode.c

···
 }
 
 static int orangefs_write_end(struct file *file, struct address_space *mapping,
-    loff_t pos, unsigned len, unsigned copied, struct page *page, void *fsdata)
+		loff_t pos, unsigned len, unsigned copied, struct folio *folio,
+		void *fsdata)
 {
-	struct folio *folio = page_folio(page);
 	struct inode *inode = folio->mapping->host;
 	loff_t last_pos = pos + copied;
 

fs/reiserfs/inode.c

···
 
 static int reiserfs_write_end(struct file *file, struct address_space *mapping,
 			      loff_t pos, unsigned len, unsigned copied,
-			      struct page *page, void *fsdata)
+			      struct folio *folio, void *fsdata)
 {
-	struct folio *folio = page_folio(page);
-	struct inode *inode = page->mapping->host;
+	struct inode *inode = folio->mapping->host;
 	int ret = 0;
 	int update_sd = 0;
 	struct reiserfs_transaction_handle *th;
···
 	}
 	flush_dcache_folio(folio);
 
-	reiserfs_commit_page(inode, page, start, start + copied);
+	reiserfs_commit_page(inode, &folio->page, start, start + copied);
 
 	/*
 	 * generic_commit_write does this for us, but does not update the
···
 out:
 	if (locked)
 		reiserfs_write_unlock(inode->i_sb);
-	unlock_page(page);
-	put_page(page);
+	folio_unlock(folio);
+	folio_put(folio);
 
 	if (pos + len > inode->i_size)
 		reiserfs_truncate_failed_write(inode);

fs/ubifs/file.c

···
 
 static int ubifs_write_end(struct file *file, struct address_space *mapping,
 			   loff_t pos, unsigned len, unsigned copied,
-			   struct page *page, void *fsdata)
+			   struct folio *folio, void *fsdata)
 {
-	struct folio *folio = page_folio(page);
 	struct inode *inode = mapping->host;
 	struct ubifs_inode *ui = ubifs_inode(inode);
 	struct ubifs_info *c = inode->i_sb->s_fs_info;

fs/udf/inode.c

···
 
 static int udf_write_end(struct file *file, struct address_space *mapping,
 			 loff_t pos, unsigned len, unsigned copied,
-			 struct page *page, void *fsdata)
+			 struct folio *folio, void *fsdata)
 {
 	struct inode *inode = file_inode(file);
-	struct folio *folio;
 	loff_t last_pos;
 
 	if (UDF_I(inode)->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB)
-		return generic_write_end(file, mapping, pos, len, copied, page,
+		return generic_write_end(file, mapping, pos, len, copied, folio,
 					 fsdata);
-	folio = page_folio(page);
 	last_pos = pos + copied;
 	if (last_pos > inode->i_size)
 		i_size_write(inode, last_pos);

fs/ufs/inode.c

···
 
 static int ufs_write_end(struct file *file, struct address_space *mapping,
 			loff_t pos, unsigned len, unsigned copied,
-			struct page *page, void *fsdata)
+			struct folio *folio, void *fsdata)
 {
 	int ret;
 
-	ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata);
+	ret = generic_write_end(file, mapping, pos, len, copied, folio, fsdata);
 	if (ret < len)
 		ufs_write_failed(mapping, pos + len);
 	return ret;

fs/vboxsf/file.c

···
 
 static int vboxsf_write_end(struct file *file, struct address_space *mapping,
 			    loff_t pos, unsigned int len, unsigned int copied,
-			    struct page *page, void *fsdata)
+			    struct folio *folio, void *fsdata)
 {
-	struct folio *folio = page_folio(page);
 	struct inode *inode = mapping->host;
 	struct vboxsf_handle *sf_handle = file->private_data;
 	size_t from = offset_in_folio(folio, pos);
···
 	if (!folio_test_uptodate(folio) && copied < len)
 		folio_zero_range(folio, from + copied, len - copied);
 
-	buf = kmap(page);
+	buf = kmap(&folio->page);
 	err = vboxsf_write(sf_handle->root, sf_handle->handle,
 			   pos, &nwritten, buf + from);
-	kunmap(page);
+	kunmap(&folio->page);
 
 	if (err) {
 		nwritten = 0;

include/linux/buffer_head.h

···
 				loff_t, unsigned len, unsigned copied,
 				struct folio *, void *);
 int generic_write_end(struct file *, struct address_space *,
-				loff_t, unsigned, unsigned,
-				struct page *, void *);
+				loff_t, unsigned len, unsigned copied,
+				struct folio *, void *);
 void folio_zero_new_buffers(struct folio *folio, size_t from, size_t to);
 int cont_write_begin(struct file *, struct address_space *, loff_t,
 			unsigned, struct page **, void **,

include/linux/fs.h

···
 				struct page **pagep, void **fsdata);
 	int (*write_end)(struct file *, struct address_space *mapping,
 				loff_t pos, unsigned len, unsigned copied,
-				struct page *page, void *fsdata);
+				struct folio *folio, void *fsdata);
 
 	/* Unfortunately this kludge is needed for FIBMAP. Don't use it */
 	sector_t (*bmap)(struct address_space *, sector_t);

mm/filemap.c

···
 		flush_dcache_folio(folio);
 
 		status = a_ops->write_end(file, mapping, pos, bytes, copied,
-						page, fsdata);
+						folio, fsdata);
 		if (unlikely(status != copied)) {
 			iov_iter_revert(i, copied - max(status, 0L));
 			if (unlikely(status < 0))

mm/shmem.c

···
 static int
 shmem_write_end(struct file *file, struct address_space *mapping,
 			loff_t pos, unsigned len, unsigned copied,
-			struct page *page, void *fsdata)
+			struct folio *folio, void *fsdata)
 {
-	struct folio *folio = page_folio(page);
 	struct inode *inode = mapping->host;
 
 	if (pos + copied > inode->i_size)