4.8-stable review patch. If anyone has any objections, please let me know.
------------------ From: Trond Myklebust <[email protected]> commit b3f9e7239074613aa6bdafa4caf7c104fe1e7276 upstream. If the delegation is revoked, then it can't be used for caching. Fixes: 869f9dfa4d6d ("NFSv4: Fix races between nfs_remove_bad_delegation()...") Signed-off-by: Trond Myklebust <[email protected]> Tested-by: Oleg Drokin <[email protected]> Signed-off-by: Anna Schumaker <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- fs/nfs/delegation.c | 1 + 1 file changed, 1 insertion(+) --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -51,6 +51,7 @@ nfs4_do_check_delegation(struct inode *i rcu_read_lock(); delegation = rcu_dereference(NFS_I(inode)->delegation); if (delegation != NULL && (delegation->type & flags) == flags && + !test_bit(NFS_DELEGATION_REVOKED, &delegation->flags) && !test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) { if (mark) nfs_mark_delegation_referenced(delegation);
