On Tue, Jun 24, 2025 at 02:48:53PM +0800, Ian Kent wrote: > Also alter may_umount_tree() to take a flag to indicate a reference to > the passed in mount is held. > > This avoids unnecessary umount requests being sent to the automount > daemon if a mount in another mount namespace is in use when the expire > check is done. Huh? I'm probably missing something, but all callers of may_umount_tree() seem to be passing that flag... propagate_mount_tree_busy() - sure, but why does may_umount_tree() get that? I'm half-asleep at the moment (3am here), so maybe it will make more sense in the morning...
