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| author | Paul E. McKenney <paulmck@us.ibm.com> | 2005-06-25 14:55:38 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-25 16:24:38 -0700 |
| commit | b2b18660066997420b716c1881a6be8b82700d97 (patch) | |
| tree | 7c6eb8e7b8163e3d332bd4a4efe2ae5b5cfabdd2 /security | |
| parent | ae67cd643e9e64217fd92457324625c67fec6e35 (diff) | |
| download | linux-b2b18660066997420b716c1881a6be8b82700d97.tar.gz linux-b2b18660066997420b716c1881a6be8b82700d97.tar.bz2 linux-b2b18660066997420b716c1881a6be8b82700d97.zip | |
[PATCH] RCU: clean up a few remaining synchronize_kernel() calls
2.6.12-rc6-mm1 has a few remaining synchronize_kernel()s, some (but not
all) in comments. This patch changes these synchronize_kernel() calls (and
comments) to synchronize_rcu() or synchronize_sched() as follows:
- arch/x86_64/kernel/mce.c mce_read(): change to synchronize_sched() to
handle races with machine-check exceptions (synchronize_rcu() would not cut
it given RCU implementations intended for hardcore realtime use.
- drivers/input/serio/i8042.c i8042_stop(): change to synchronize_sched() to
handle races with i8042_interrupt() interrupt handler. Again,
synchronize_rcu() would not cut it given RCU implementations intended for
hardcore realtime use.
- include/*/kdebug.h comments: change to synchronize_sched() to handle races
with NMIs. As before, synchronize_rcu() would not cut it...
- include/linux/list.h comment: change to synchronize_rcu(), since this
comment is for list_del_rcu().
- security/keys/key.c unregister_key_type(): change to synchronize_rcu(),
since this is interacting with RCU read side.
- security/keys/process_keys.c install_session_keyring(): change to
synchronize_rcu(), since this is interacting with RCU read side.
Signed-off-by: "Paul E. McKenney" <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'security')
| -rw-r--r-- | security/keys/key.c | 2 | ||||
| -rw-r--r-- | security/keys/process_keys.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/security/keys/key.c b/security/keys/key.c index 3304d37bb379..fb89f9844465 100644 --- a/security/keys/key.c +++ b/security/keys/key.c @@ -980,7 +980,7 @@ void unregister_key_type(struct key_type *ktype) spin_unlock(&key_serial_lock); /* make sure everyone revalidates their keys */ - synchronize_kernel(); + synchronize_rcu(); /* we should now be able to destroy the payloads of all the keys of * this type with impunity */ diff --git a/security/keys/process_keys.c b/security/keys/process_keys.c index 34db087bbcc7..9b0369c5a223 100644 --- a/security/keys/process_keys.c +++ b/security/keys/process_keys.c @@ -234,7 +234,7 @@ static int install_session_keyring(struct task_struct *tsk, ret = 0; /* we're using RCU on the pointer */ - synchronize_kernel(); + synchronize_rcu(); key_put(old); error: return ret; |