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Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

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* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (44 commits)
  rcu: Fix accelerated GPs for last non-dynticked CPU
  rcu: Make non-RCU_PROVE_LOCKING rcu_read_lock_sched_held() understand boot
  rcu: Fix accelerated grace periods for last non-dynticked CPU
  rcu: Export rcu_scheduler_active
  rcu: Make rcu_read_lock_sched_held() take boot time into account
  rcu: Make lockdep_rcu_dereference() message less alarmist
  sched, cgroups: Fix module export
  rcu: Add RCU_CPU_STALL_VERBOSE to dump detailed per-task information
  rcu: Fix rcutorture mod_timer argument to delay one jiffy
  rcu: Fix deadlock in TREE_PREEMPT_RCU CPU stall detection
  rcu: Convert to raw_spinlocks
  rcu: Stop overflowing signed integers
  rcu: Use canonical URL for Mathieu's dissertation
  rcu: Accelerate grace period if last non-dynticked CPU
  rcu: Fix citation of Mathieu's dissertation
  rcu: Documentation update for CONFIG_PROVE_RCU
  security: Apply lockdep-based checking to rcu_dereference() uses
  idr: Apply lockdep-based diagnostics to rcu_dereference() uses
  radix-tree: Disable RCU lockdep checking in radix tree
  vfs: Abstract rcu_dereference_check for files-fdtable use
  ...
This commit is contained in:
Linus Torvalds
2010-02-28 10:13:16 -08:00
parent f91b22c35f 71da81324c
commit 642c4c75a7
55 changed files with 1346 additions and 448 deletions
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security/keys/gc.c
+2 -1
View File
@@ -77,7 +77,8 @@ static bool key_gc_keyring(struct key *keyring, time_t limit)
goto dont_gc;
/* scan the keyring looking for dead keys */
klist = rcu_dereference(keyring->payload.subscriptions);
klist = rcu_dereference_check(keyring->payload.subscriptions,
lockdep_is_held(&key_serial_lock));
if (!klist)
goto dont_gc;
security/keys/keyring.c
+3 -1
View File
@@ -151,7 +151,9 @@ static void keyring_destroy(struct key *keyring)
write_unlock(&keyring_name_lock);
}
klist = rcu_dereference(keyring->payload.subscriptions);
klist = rcu_dereference_check(keyring->payload.subscriptions,
rcu_read_lock_held() ||
atomic_read(&keyring->usage) == 0);
if (klist) {
for (loop = klist->nkeys - 1; loop >= 0; loop--)
key_put(klist->keys[loop]);