Quoting Gao feng (gaofeng@xxxxxxxxxxxxxx): > From: gaofeng <gaofeng@xxxxxxxxxxxxxx> > > Since the memory used by tmpfs is under control of > memory cgroup. and the files under the tmpfs will not > be leak to other tmpfs. > > So mounting tmpfs in user namespace does no harm to the > host,we can allow tmpfs to be mounted in user namespace. > > Signed-off-by: gaofeng <gaofeng@xxxxxxxxxxxxxx> I've got the same patch in my kernel at http://kernel.ubuntu.com/git?p=serge/quantal-userns.git;a=summary except note that there are two definitions of shmem_fs_type. > --- > mm/shmem.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/mm/shmem.c b/mm/shmem.c > index 5dd56f6..8eff60a 100644 > --- a/mm/shmem.c > +++ b/mm/shmem.c > @@ -2766,6 +2766,7 @@ static struct file_system_type shmem_fs_type = { > .name = "tmpfs", > .mount = shmem_mount, > .kill_sb = kill_litter_super, > + .fs_flags = FS_USERNS_MOUNT, > }; > > int __init shmem_init(void) > -- > 1.7.11.7 > _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/containers
