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authorIngo Molnar <mingo@elte.hu>2011-05-12 03:36:18 -0400
committerIngo Molnar <mingo@elte.hu>2011-05-12 03:36:18 -0400
commit9cb5baba5e3acba0994ad899ee908799104c9965 (patch)
treed5ff16000256a0bf56279926e6114b4603ede2b4 /net/ipv4/inetpeer.c
parent7142d17e8f935fa842e9f6eece2281b6d41625d6 (diff)
parent693d92a1bbc9e42681c42ed190bd42b636ca876f (diff)
Merge commit 'v2.6.39-rc7' into sched/core
Diffstat (limited to 'net/ipv4/inetpeer.c')
-rw-r--r--net/ipv4/inetpeer.c13
1 files changed, 7 insertions, 6 deletions
diff --git a/net/ipv4/inetpeer.c b/net/ipv4/inetpeer.c
index dd1b20eca1a2..9df4e635fb5f 100644
--- a/net/ipv4/inetpeer.c
+++ b/net/ipv4/inetpeer.c
@@ -354,7 +354,8 @@ static void inetpeer_free_rcu(struct rcu_head *head)
354} 354}
355 355
356/* May be called with local BH enabled. */ 356/* May be called with local BH enabled. */
357static void unlink_from_pool(struct inet_peer *p, struct inet_peer_base *base) 357static void unlink_from_pool(struct inet_peer *p, struct inet_peer_base *base,
358 struct inet_peer __rcu **stack[PEER_MAXDEPTH])
358{ 359{
359 int do_free; 360 int do_free;
360 361
@@ -368,7 +369,6 @@ static void unlink_from_pool(struct inet_peer *p, struct inet_peer_base *base)
368 * We use refcnt=-1 to alert lockless readers this entry is deleted. 369 * We use refcnt=-1 to alert lockless readers this entry is deleted.
369 */ 370 */
370 if (atomic_cmpxchg(&p->refcnt, 1, -1) == 1) { 371 if (atomic_cmpxchg(&p->refcnt, 1, -1) == 1) {
371 struct inet_peer __rcu **stack[PEER_MAXDEPTH];
372 struct inet_peer __rcu ***stackptr, ***delp; 372 struct inet_peer __rcu ***stackptr, ***delp;
373 if (lookup(&p->daddr, stack, base) != p) 373 if (lookup(&p->daddr, stack, base) != p)
374 BUG(); 374 BUG();
@@ -422,7 +422,7 @@ static struct inet_peer_base *peer_to_base(struct inet_peer *p)
422} 422}
423 423
424/* May be called with local BH enabled. */ 424/* May be called with local BH enabled. */
425static int cleanup_once(unsigned long ttl) 425static int cleanup_once(unsigned long ttl, struct inet_peer __rcu **stack[PEER_MAXDEPTH])
426{ 426{
427 struct inet_peer *p = NULL; 427 struct inet_peer *p = NULL;
428 428
@@ -454,7 +454,7 @@ static int cleanup_once(unsigned long ttl)
454 * happen because of entry limits in route cache. */ 454 * happen because of entry limits in route cache. */
455 return -1; 455 return -1;
456 456
457 unlink_from_pool(p, peer_to_base(p)); 457 unlink_from_pool(p, peer_to_base(p), stack);
458 return 0; 458 return 0;
459} 459}
460 460
@@ -524,7 +524,7 @@ struct inet_peer *inet_getpeer(struct inetpeer_addr *daddr, int create)
524 524
525 if (base->total >= inet_peer_threshold) 525 if (base->total >= inet_peer_threshold)
526 /* Remove one less-recently-used entry. */ 526 /* Remove one less-recently-used entry. */
527 cleanup_once(0); 527 cleanup_once(0, stack);
528 528
529 return p; 529 return p;
530} 530}
@@ -540,6 +540,7 @@ static void peer_check_expire(unsigned long dummy)
540{ 540{
541 unsigned long now = jiffies; 541 unsigned long now = jiffies;
542 int ttl, total; 542 int ttl, total;
543 struct inet_peer __rcu **stack[PEER_MAXDEPTH];
543 544
544 total = compute_total(); 545 total = compute_total();
545 if (total >= inet_peer_threshold) 546 if (total >= inet_peer_threshold)
@@ -548,7 +549,7 @@ static void peer_check_expire(unsigned long dummy)
548 ttl = inet_peer_maxttl 549 ttl = inet_peer_maxttl
549 - (inet_peer_maxttl - inet_peer_minttl) / HZ * 550 - (inet_peer_maxttl - inet_peer_minttl) / HZ *
550 total / inet_peer_threshold * HZ; 551 total / inet_peer_threshold * HZ;
551 while (!cleanup_once(ttl)) { 552 while (!cleanup_once(ttl, stack)) {
552 if (jiffies != now) 553 if (jiffies != now)
553 break; 554 break;
554 } 555 }