f2fs: enable quota at remount from r to w

We have to enable quota only when remounting from read to write. Otherwise, we'll get remount failure. (e.g., write to write case)

---
 fs/f2fs/super.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

index 3c62492b6a0d..8157f39f8539 100644
@@ -1283,7 +1283,7 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data)
 		err = dquot_suspend(sb, -1);
 		if (err < 0)
 			goto restore_opts;
-	} else {
+	} else if (f2fs_readonly(sb) && !(*flags & MS_RDONLY)) {
 		/* dquot_resume needs RW */
 		sb->s_flags &= ~MS_RDONLY;
 		if (sb_any_quota_suspended(sb)) {

2.15.0.531.g2ccb3012c9-goog

Thanks,

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