nilfs2: convert nilfs_page_bug() to nilfs_folio_bug()

All callers have a folio now, so convert it.

Link: https://lkml.kernel.org/r/20231127143036.2425-18-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/btnode.c

@@ -190,7 +190,7 @@ int nilfs_btnode_prepare_change_key(struct address_space *btnc,
 retry:
 		/* BUG_ON(oldkey != obh->b_folio->index); */
 		if (unlikely(oldkey != ofolio->index))
-			NILFS_PAGE_BUG(&ofolio->page,
+			NILFS_FOLIO_BUG(ofolio,
 				       "invalid oldkey %lld (newkey=%lld)",
 				       (unsigned long long)oldkey,
 				       (unsigned long long)newkey);
@@ -246,7 +246,7 @@ void nilfs_btnode_commit_change_key(struct address_space *btnc,
 	if (nbh == NULL) {	/* blocksize == pagesize */
 		ofolio = obh->b_folio;
 		if (unlikely(oldkey != ofolio->index))
-			NILFS_PAGE_BUG(&ofolio->page,
+			NILFS_FOLIO_BUG(ofolio,
 				       "invalid oldkey %lld (newkey=%lld)",
 				       (unsigned long long)oldkey,
 				       (unsigned long long)newkey);

fs/nilfs2/page.c

@@ -150,29 +150,30 @@ bool nilfs_folio_buffers_clean(struct folio *folio)
 	return true;
 }
 
-void nilfs_page_bug(struct page *page)
+void nilfs_folio_bug(struct folio *folio)
 {
+	struct buffer_head *bh, *head;
 	struct address_space *m;
 	unsigned long ino;
 
-	if (unlikely(!page)) {
-		printk(KERN_CRIT "NILFS_PAGE_BUG(NULL)\n");
+	if (unlikely(!folio)) {
+		printk(KERN_CRIT "NILFS_FOLIO_BUG(NULL)\n");
 		return;
 	}
 
-	m = page->mapping;
+	m = folio->mapping;
 	ino = m ? m->host->i_ino : 0;
 
-	printk(KERN_CRIT "NILFS_PAGE_BUG(%p): cnt=%d index#=%llu flags=0x%lx "
+	printk(KERN_CRIT "NILFS_FOLIO_BUG(%p): cnt=%d index#=%llu flags=0x%lx "
 	       "mapping=%p ino=%lu\n",
-	       page, page_ref_count(page),
-	       (unsigned long long)page->index, page->flags, m, ino);
+	       folio, folio_ref_count(folio),
+	       (unsigned long long)folio->index, folio->flags, m, ino);
 
-	if (page_has_buffers(page)) {
-		struct buffer_head *bh, *head;
+	head = folio_buffers(folio);
+	if (head) {
 		int i = 0;
 
-		bh = head = page_buffers(page);
+		bh = head;
 		do {
 			printk(KERN_CRIT
 			       " BH[%d] %p: cnt=%d block#=%llu state=0x%lx\n",
@@ -258,7 +259,7 @@ int nilfs_copy_dirty_pages(struct address_space *dmap,
 
 		folio_lock(folio);
 		if (unlikely(!folio_test_dirty(folio)))
-			NILFS_PAGE_BUG(&folio->page, "inconsistent dirty state");
+			NILFS_FOLIO_BUG(folio, "inconsistent dirty state");
 
 		dfolio = filemap_grab_folio(dmap, folio->index);
 		if (unlikely(IS_ERR(dfolio))) {
@@ -268,7 +269,7 @@ int nilfs_copy_dirty_pages(struct address_space *dmap,
 			break;
 		}
 		if (unlikely(!folio_buffers(folio)))
-			NILFS_PAGE_BUG(&folio->page,
+			NILFS_FOLIO_BUG(folio,
 				       "found empty page in dat page cache");
 
 		nilfs_copy_folio(dfolio, folio, true);

fs/nilfs2/page.h

@@ -37,7 +37,7 @@ struct buffer_head *nilfs_grab_buffer(struct inode *, struct address_space *,
 void nilfs_forget_buffer(struct buffer_head *);
 void nilfs_copy_buffer(struct buffer_head *, struct buffer_head *);
 bool nilfs_folio_buffers_clean(struct folio *);
-void nilfs_page_bug(struct page *);
+void nilfs_folio_bug(struct folio *);
 
 int nilfs_copy_dirty_pages(struct address_space *, struct address_space *);
 void nilfs_copy_back_pages(struct address_space *, struct address_space *);
@@ -49,7 +49,7 @@ unsigned long nilfs_find_uncommitted_extent(struct inode *inode,
 					    sector_t start_blk,
 					    sector_t *blkoff);
 
-#define NILFS_PAGE_BUG(page, m, a...) \
-	do { nilfs_page_bug(page); BUG(); } while (0)
+#define NILFS_FOLIO_BUG(folio, m, a...) \
+	do { nilfs_folio_bug(folio); BUG(); } while (0)
 
 #endif /* _NILFS_PAGE_H */