[PATCH 2/4] ext4: return error on ext4_find_inline_entry

[Thadeu Lima de Souza Cascardo]

In case of errors when reading an inode from disk or traversing inline
directory entries, return an error-encoded ERR_PTR instead of returning
NULL. ext4_find_inline_entry only caller, __ext4_find_entry already returns
such encoded errors.

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@xxxxxxxxxx>
---
 fs/ext4/inline.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c
index e7a09a99837b..7b98b1bf1dc9 100644
--- a/fs/ext4/inline.c
+++ b/fs/ext4/inline.c
@@ -1669,8 +1669,9 @@ struct buffer_head *ext4_find_inline_entry(struct inode *dir,
 	void *inline_start;
 	int inline_size;
 
-	if (ext4_get_inode_loc(dir, &iloc))
-		return NULL;
+	ret = ext4_get_inode_loc(dir, &iloc);
+	if (ret)
+		return ERR_PTR(ret);
 
 	down_read(&EXT4_I(dir)->xattr_sem);
 	if (!ext4_has_inline_data(dir)) {
@@ -1701,7 +1702,10 @@ struct buffer_head *ext4_find_inline_entry(struct inode *dir,
 
 out:
 	brelse(iloc.bh);
-	iloc.bh = NULL;
+	if (ret < 0)
+		iloc.bh = ERR_PTR(ret);
+	else
+		iloc.bh = NULL;
 out_find:
 	up_read(&EXT4_I(dir)->xattr_sem);
 	return iloc.bh;
-- 
2.34.1