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NFSv4.1: Don't recheck delegations that have already been checked

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Ensure we don't spam the server with test_stateid() calls for
delegations that have already been checked.

Signed-off-by: Trond Myklebust <[email protected]>
Tested-by: Oleg Drokin <[email protected]>
Signed-off-by: Anna Schumaker <[email protected]>
This commit is contained in:
Trond Myklebust 2016-09-22 13:39:01 -04:00 • committed by Anna Schumaker
commit 63d63cbf5e
1 changed files with 5 additions and 0 deletions
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5
fs/nfs/nfs4proc.c
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@ -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);