diff --git a/fs/jfs/ioctl.c b/fs/jfs/ioctl.c
index 3c8663b..dfda12a 100644
--- a/fs/jfs/ioctl.c
+++ b/fs/jfs/ioctl.c
@@ -79,6 +79,9 @@
 		if (!S_ISDIR(inode->i_mode))
 			flags &= ~JFS_DIRSYNC_FL;
 
+		/* Is it quota file? Do not allow user to mess with it */
+		if (IS_NOQUOTA(inode))
+			return -EPERM;
 		jfs_get_inode_flags(jfs_inode);
 		oldflags = jfs_inode->mode2;