[v3,08/12] NFSv4.1: Don't recheck delegations that have already been checked
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Message ID 1473444253-12433-9-git-send-email-trond.myklebust@primarydata.com
State New
Headers show

Commit Message

Trond Myklebust Sept. 9, 2016, 6:04 p.m. UTC
Ensure we don't spam the server with test_stateid() calls for
delegations that have already been checked.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
---
 fs/nfs/nfs4proc.c | 5 +++++
 1 file changed, 5 insertions(+)

Patch
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diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 74dd9157539a..6cae73a08ba0 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -2459,6 +2459,11 @@  static void nfs41_check_delegation_stateid(struct nfs4_state *state)
 		return;
 	}
 
+	if (!test_and_clear_bit(NFS_DELEGATION_TEST_EXPIRED, &delegation->flags)) {
+		rcu_read_unlock();
+		return;
+	}
+
 	cred = get_rpccred(delegation->cred);
 	rcu_read_unlock();
 	status = nfs41_test_and_free_expired_stateid(server, &stateid, cred);