[PATCH 1/2] f2fs: restrict inline_xattr_size configuration

[Chao Yu]

This patch limits to enable inline_xattr_size mount option only if
both extra_attr and flexible_inline_xattr feature is on in current
image.

Signed-off-by: Chao Yu <yuchao0@xxxxxxxxxx>
---
 fs/f2fs/super.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 8173ae688814..a859372457eb 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -699,6 +699,13 @@ static int parse_options(struct super_block *sb, char *options)
 	}
 
 	if (test_opt(sbi, INLINE_XATTR_SIZE)) {
+		if (!f2fs_sb_has_extra_attr(sb) ||
+			!f2fs_sb_has_flexible_inline_xattr(sb)) {
+			f2fs_msg(sb, KERN_ERR,
+					"extra_attr or flexible_inline_xattr "
+					"feature is off");
+			return -EINVAL;
+		}
 		if (!test_opt(sbi, INLINE_XATTR)) {
 			f2fs_msg(sb, KERN_ERR,
 					"inline_xattr_size option should be "
-- 
2.15.0.55.gc2ece9dc4de6