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authorTrond Myklebust <Trond.Myklebust@netapp.com>2008-10-28 15:21:41 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2008-10-28 15:21:41 -0400
commiteac0d18d44705f8a1b72cccec3a453e1a43eb20a (patch)
treeb727174dba608adc5c4cbfaea9e19b2c6ac1cf26
parentae05f269400533cbb32bfba131ab528d78dffd16 (diff)
SUNRPC: Fix rpcauth_prune_expired
We need to make sure that we don't remove creds from the cred_unused list if they are still under the moratorium, or else they will never get garbage collected. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
-rw-r--r--net/sunrpc/auth.c16
1 files changed, 9 insertions, 7 deletions
diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
index 436bf1b4b76..a045a1253d4 100644
--- a/net/sunrpc/auth.c
+++ b/net/sunrpc/auth.c
@@ -228,19 +228,21 @@ static int
rpcauth_prune_expired(struct list_head *free, int nr_to_scan)
{
spinlock_t *cache_lock;
- struct rpc_cred *cred;
+ struct rpc_cred *cred, *next;
unsigned long expired = jiffies - RPC_AUTH_EXPIRY_MORATORIUM;
- while (!list_empty(&cred_unused)) {
- cred = list_entry(cred_unused.next, struct rpc_cred, cr_lru);
+ list_for_each_entry_safe(cred, next, &cred_unused, cr_lru) {
+
+ /* Enforce a 60 second garbage collection moratorium */
+ if (time_in_range(cred->cr_expire, expired, jiffies) &&
+ test_bit(RPCAUTH_CRED_HASHED, &cred->cr_flags) != 0)
+ continue;
+
list_del_init(&cred->cr_lru);
number_cred_unused--;
if (atomic_read(&cred->cr_count) != 0)
continue;
- /* Enforce a 5 second garbage collection moratorium */
- if (time_in_range(cred->cr_expire, expired, jiffies) &&
- test_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags) != 0)
- continue;
+
cache_lock = &cred->cr_auth->au_credcache->lock;
spin_lock(cache_lock);
if (atomic_read(&cred->cr_count) == 0) {