diff mbox

[v4,08/20] NFSv4.1: Don't recheck delegations that have already been checked

Message ID 1473957960-10001-9-git-send-email-trond.myklebust@primarydata.com (mailing list archive)
State New, archived
Headers show

Commit Message

Trond Myklebust Sept. 15, 2016, 4:45 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(+)
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Patch

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 3552f3a4ceb0..97a614370604 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);