Commit 29c87793 authored Mar 29, 2022 by Matthew Wilcox (Oracle)

f2fs: Get the superblock from the mapping instead of the page



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>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>

parent 0fb5b2eb

fs/f2fs/checkpoint.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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;
		}

fs/f2fs/node.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -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;
		}