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From:   Scott Mayhew <smayhew@redhat.com>
To:     trond.myklebust@hammerspace.com, anna.schumaker@netapp.com
Cc:     linux-nfs@vger.kernel.org
Subject: [PATCH v2] NFSv4: don't mark all open state for recovery when handling recallable state revoked flag
Date:   Mon,  6 May 2019 11:59:05 -0400
Message-Id: <20190506155905.16152-1-smayhew@redhat.com>
Sender: linux-nfs-owner@vger.kernel.org
Precedence: bulk

Only delegations and layouts can be recalled, so it shouldn't be
necessary to recover all opens when handling the status bit
SEQ4_STATUS_RECALLABLE_STATE_REVOKED.  We'll still wind up calling
nfs41_open_expired() when a TEST_STATEID returns NFS4ERR_DELEG_REVOKED.

Signed-off-by: Scott Mayhew <smayhew@redhat.com>
---
 fs/nfs/delegation.c | 12 ++++++++++++
 fs/nfs/delegation.h |  1 +
 fs/nfs/nfs4state.c  |  3 +--
 3 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c
index 2f6b447cdd82..8b78274e3e56 100644
--- a/fs/nfs/delegation.c
+++ b/fs/nfs/delegation.c
@@ -1033,6 +1033,18 @@ void nfs_mark_test_expired_all_delegations(struct nfs_client *clp)
 	rcu_read_unlock();
 }
 
+/**
+ * nfs_test_expired_all_delegations - test all delegations for a client
+ * @clp: nfs_client to process
+ *
+ * Helper for handling "recallable state revoked" status from server.
+ */
+void nfs_test_expired_all_delegations(struct nfs_client *clp)
+{
+	nfs_mark_test_expired_all_delegations(clp);
+	nfs4_schedule_state_manager(clp);
+}
+
 /**
  * nfs_reap_expired_delegations - reap expired delegations
  * @clp: nfs_client to process
diff --git a/fs/nfs/delegation.h b/fs/nfs/delegation.h
index 35b4b02c1ae0..5799777df5ec 100644
--- a/fs/nfs/delegation.h
+++ b/fs/nfs/delegation.h
@@ -58,6 +58,7 @@ void nfs_delegation_mark_reclaim(struct nfs_client *clp);
 void nfs_delegation_reap_unclaimed(struct nfs_client *clp);
 
 void nfs_mark_test_expired_all_delegations(struct nfs_client *clp);
+void nfs_test_expired_all_delegations(struct nfs_client *clp);
 void nfs_reap_expired_delegations(struct nfs_client *clp);
 
 /* NFSv4 delegation-related procedures */
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 3de36479ed7a..7d0ee5a2aef9 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -2346,8 +2346,7 @@ static void nfs41_handle_recallable_state_revoked(struct nfs_client *clp)
 {
 	/* FIXME: For now, we destroy all layouts. */
 	pnfs_destroy_all_layouts(clp);
-	/* FIXME: For now, we test all delegations+open state+locks. */
-	nfs41_handle_some_state_revoked(clp);
+	nfs_test_expired_all_delegations(clp);
 	dprintk("%s: Recallable state revoked on server %s!\n", __func__,
 			clp->cl_hostname);
 }
-- 
2.17.2