nilfs2: pass the mapped address to nilfs_check_page()

Remove another use of page_address() as part of preparing for the kmap to
kmap_local transition.

Link: https://lkml.kernel.org/r/20231127143036.2425-8-konishi.ryusuke@gmail.comSigned-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

fs/nilfs2/dir.c

@@ -107,12 +107,11 @@ static void nilfs_commit_chunk(struct page *page,
 	unlock_page(page);
 }
 
-static bool nilfs_check_page(struct page *page)
+static bool nilfs_check_page(struct page *page, char *kaddr)
 {
 	struct inode *dir = page->mapping->host;
 	struct super_block *sb = dir->i_sb;
 	unsigned int chunk_size = nilfs_chunk_size(dir);
-	char *kaddr = page_address(page);
 	unsigned int offs, rec_len;
 	unsigned int limit = PAGE_SIZE;
 	struct nilfs_dir_entry *p;
@@ -192,7 +191,7 @@ static void *nilfs_get_page(struct inode *dir, unsigned long n,
 
 	kaddr = kmap(page);
 	if (unlikely(!PageChecked(page))) {
-		if (!nilfs_check_page(page))
+		if (!nilfs_check_page(page, kaddr))
 			goto fail;
 	}