Hi, I mounted overlayfs at / My cat /proc/mounts looks like the following. # cat /proc/mounts /dev/root / squashfs ro,seclabel,relatime 0 0 .. overlayfs / overlay rw,relatime,lowerdir=/,upperdir=/cache/upper,workdir=/cache/working 0 0 The original blockdevice at fs root is squashfs formatted so doesnt support write operations. I mounted overlayfs on fs root to cache the writes made. While in /, the filesystem does not allow me to create files/directories, if I dont prefix it with ".." directive. hikey:/ # mkdir test mkdir: 'testt12': Read-only file system hikey:/ # mkdir ../test "mkdir ../test" command succeeds. I traced through the fs/namei.c code to notice that __follow_mount_rcu does not get called when I execute "mkdir test" whereas, it gets called from the follow_dotdot_rcu when I execute "mkdir ../test" What is the expected behavior ? Should "mkdir test" and "mkdir ../test" both succeed ? Similar inconsistency is found with "ls" and "ls .." as well while in fs root. Thanks, Badhri -- 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
