On Mon, Mar 12, 2018 at 06:28:30PM -0500, Eric W. Biederman wrote: > Given that nfs_kill_super calls generic_shutdown_super and > generic_shutdown_super calls shrink_dcache_for_umount > I would argue that nfsv2 and nfsv3 are buggy in the same > case, as shrink_dcache_for_umount is called on something > that is not the root of the filesystem's dentry tree. That's not a problem - it will simply evict a subtree first, then go through ->s_roots and kill each piece.
