From: Chao Yu <yuchao0@huawei.com>
Date: Wed, 25 Jul 2018 23:19:48 +0000 (+0800)
Subject: f2fs: fix to restrict mount condition when without CONFIG_QUOTA
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=4ddc1b28aac57a90c6426d55e0dea3c1b5eb4782;p=linux.git

f2fs: fix to restrict mount condition when without CONFIG_QUOTA

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@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index d10c9a57a15d1..449b09498ddbc 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)) {