[PATCH 6.1 18/19] udf: Handle error when expanding directory

[Thadeu Lima de Souza Cascardo <cascardo@igalia.com>]

From: Jan Kara <jack@suse.cz>

[ Upstream commit 33e9a53cd9f099b138578f8e1a3d60775ff8cbba ]

When there is an error when adding extent to the directory to expand it,
make sure to propagate the error up properly. This is not expected to
happen currently but let's make the code more futureproof.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@igalia.com>
---
 fs/udf/namei.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/fs/udf/namei.c b/fs/udf/namei.c
index 75d029ae3d7d..7271aa8d7557 100644
--- a/fs/udf/namei.c
+++ b/fs/udf/namei.c
@@ -192,8 +192,13 @@ static struct buffer_head *udf_expand_dir_adinicb(struct inode *inode,
 	epos.bh = NULL;
 	epos.block = iinfo->i_location;
 	epos.offset = udf_file_entry_alloc_offset(inode);
-	udf_add_aext(inode, &epos, &eloc, inode->i_size, 0);
+	ret = udf_add_aext(inode, &epos, &eloc, inode->i_size, 0);
 	brelse(epos.bh);
+	if (ret < 0) {
+		*err = ret;
+		udf_free_blocks(inode->i_sb, inode, &eloc, 0, 1);
+		return NULL;
+	}
 	mark_inode_dirty(inode);
 
 	/* Now fixup tags in moved directory entries */
-- 
2.34.1