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Commit 059b43e9 authored by Trond Myklebust's avatar Trond Myklebust Committed by Anna Schumaker
Browse files

NFSv4: Ensure we don't re-test revoked and freed stateids 



This fixes a potential infinite loop in nfs_reap_expired_delegations.

Signed-off-by: default avatarTrond Myklebust <trond.myklebust@primarydata.com>
Tested-by: default avatarOleg Drokin <green@linuxhacker.ru>
Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
parent 26d36301

fs/nfs/delegation.c

+3 −0
Original line number Diff line number Diff line
@@ -656,6 +656,7 @@ static void nfs_mark_delegation_revoked(struct nfs_server *server, 
		struct nfs_delegation *delegation)

{

	set_bit(NFS_DELEGATION_REVOKED, &delegation->flags);

	delegation->stateid.type = NFS4_INVALID_STATEID_TYPE;

	nfs_mark_return_delegation(server, delegation);

}
@@ -894,6 +895,8 @@ static inline bool nfs4_server_rebooted(const struct nfs_client *clp) 
static void nfs_mark_test_expired_delegation(struct nfs_server *server,

	    struct nfs_delegation *delegation)

{

	if (delegation->stateid.type == NFS4_INVALID_STATEID_TYPE)

		return;

	clear_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags);

	set_bit(NFS_DELEGATION_TEST_EXPIRED, &delegation->flags);

	set_bit(NFS4CLNT_DELEGATION_EXPIRED, &server->nfs_client->cl_state);