Miklos Szeredi: > Overlayfs will create a private clone of both the lower and upper > mounts. The mnt_flags are only modified on the private clone, whose > sole user is overlayfs itself. Yes, I've found overlayfs creates private clone mounts. Sorry noise again. By cloning privately, users cannot change mount flags. But it will not be a big problem. By the way, you might remember that I have asked about overriding creditials and signals. When a process issues chmod, rename or something, then the internal copyup happens. If RLIMIT_FSIZE is set to the process, then it may fire SIGXFSZ and return EFBIG. It looks strange. But I don't know how important is it since setting RLIMIT_FSIZE is less popular I am afraid. J. R. Okajima -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html