[PATCH 10/12] f2fs: Get the superblock from the mapping instead of the page

["Matthew Wilcox (Oracle)" <willy@infradead.org>]

It's slightly more efficient to go directly from the mapping to the
superblock than to go from the page.  Now that these routines have
the mapping passed to them, there's no reason not to use it.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
 fs/f2fs/checkpoint.c | 2 +-
 fs/f2fs/node.c       | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index a8fc4fa511a8..f5366feea82d 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -456,7 +456,7 @@ static bool f2fs_dirty_meta_folio(struct address_space *mapping,
 		folio_mark_uptodate(folio);
 	if (!folio_test_dirty(folio)) {
 		filemap_dirty_folio(mapping, folio);
-		inc_page_count(F2FS_P_SB(&folio->page), F2FS_DIRTY_META);
+		inc_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_META);
 		set_page_private_reference(&folio->page);
 		return true;
 	}
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 0b6e741e94a0..c45d341dcf6e 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -2146,11 +2146,11 @@ static bool f2fs_dirty_node_folio(struct address_space *mapping,
 		folio_mark_uptodate(folio);
 #ifdef CONFIG_F2FS_CHECK_FS
 	if (IS_INODE(&folio->page))
-		f2fs_inode_chksum_set(F2FS_P_SB(&folio->page), &folio->page);
+		f2fs_inode_chksum_set(F2FS_M_SB(mapping), &folio->page);
 #endif
 	if (!folio_test_dirty(folio)) {
 		filemap_dirty_folio(mapping, folio);
-		inc_page_count(F2FS_P_SB(&folio->page), F2FS_DIRTY_NODES);
+		inc_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_NODES);
 		set_page_private_reference(&folio->page);
 		return true;
 	}
-- 
2.34.1