[PATCH 2/2] btrfs: move the mapping_set_error() out of the loop in end_bbio_data_write()

[Qu Wenruo <wqu@suse.com>]

Previously we have to call mapping_set_error() inside the
for_each_folio_all() loop, because we do not have a better way to grab
an inode, other than through folio->mapping.

But nowadays every btrfs_bio has its inode member populated, thus we can
easily grab the inode and its i_mapping easily, without the help from a
folio.

Now we can move that mapping_set_error() out of the loop, and use
bbio->inode to grab the i_mapping.

Signed-off-by: Qu Wenruo <wqu@suse.com>
---
 fs/btrfs/extent_io.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index de6e25475ce1..f972c1580374 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -529,14 +529,14 @@ static void end_bbio_data_write(struct btrfs_bio *bbio)
 		u32 len = fi.length;
 
 		bio_size += len;
-		if (error)
-			mapping_set_error(folio->mapping, error);
-
 		ASSERT(btrfs_folio_test_ordered(fs_info, folio, start, len));
 		btrfs_folio_clear_ordered(fs_info, folio, start, len);
 		btrfs_folio_clear_writeback(fs_info, folio, start, len);
 	}
 
+	if (error)
+		mapping_set_error(bbio->inode->vfs_inode.i_mapping, error);
+
 	btrfs_finish_ordered_extent(bbio->ordered, bbio->file_offset, bio_size, !error);
 	bio_put(bio);
 }
-- 
2.53.0