On Mon, Jan 05, 2015 at 02:46:27PM -0600, Eric W. Biederman wrote: > Modify umount(MNT_DETACH) to keep mounts in the hash table that are > locked to their parent mounts, when the parent is lazily unmounted. > In doing this invert the reference count so that the parent holds a > reference to the children instead of the children holding a reference > to the parent. > > Then in mntput_no_expire detach the children and in cleanup_mnt mntput > the children and dput the dentry they were mounted on. > > In __detach_mounts if there are any mounts that have been unmounted > but still are on the list of mounts of a mountpoint, detach those > mounts and schedule them to be mntput and their reference to the dentry > to be put when it becomes safe to sleep. Explicit description of your new refcounting rules, please. What's more, how do those non-pinning children interact with e.g. copy_tree()? -- 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
