[PATCH RESEND] f2fs: fix to restrict mount condition when without CONFIG_QUOTA

[Chao Yu]

From: Chao Yu <yuchao0@xxxxxxxxxx>

Like quota_ino feature, we need to reject mounting RDWR with image
which enables project_quota feature when there is no CONFIG_QUOTA
be set in kernel.

Signed-off-by: Chao Yu <yuchao0@xxxxxxxxxx>
---
 fs/f2fs/super.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index dbc1cb53581f..bc7c14a055bb 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -775,6 +775,12 @@ static int parse_options(struct super_block *sb, char *options)
 			 "without CONFIG_QUOTA");
 		return -EINVAL;
 	}
+	if (f2fs_sb_has_project_quota(sbi->sb) && !f2fs_readonly(sbi->sb)) {
+		f2fs_msg(sb, KERN_ERR,
+			"Filesystem with project quota feature cannot be "
+			"mounted RDWR without CONFIG_QUOTA");
+		return -EINVAL;
+	}
 #endif
 
 	if (F2FS_IO_SIZE_BITS(sbi) && !test_opt(sbi, LFS)) {
-- 
2.16.2.17.g38e79b1fd