Messages in this thread Patch in this message | | | Date | Mon, 31 Oct 2005 21:49:31 -0800 | From | "Paul E. McKenney" <> | Subject | [PATCH] Fixes for RCU handling of sighand_struct |
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Hello!
Some fixes to RCU usage for sighand_struct, adding a couple of needed rcu_assign_pointer() calls.
Signed-off-by: <paulmck@us.ibm.com>
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diff -urpNa linux-2.6.14-rc5-rt5/fs/exec.c linux-2.6.14-rc5-rt5-sighandRCUfix/fs/exec.c --- linux-2.6.14-rc5-rt5/fs/exec.c 2005-10-24 05:59:08.000000000 -0700 +++ linux-2.6.14-rc5-rt5-sighandRCUfix/fs/exec.c 2005-10-31 15:38:02.000000000 -0800 @@ -777,7 +777,7 @@ no_thread_group: spin_lock(&oldsighand->siglock); spin_lock(&newsighand->siglock); - current->sighand = newsighand; + rcu_assign_pointer(current->sighand, newsighand); recalc_sigpending(); spin_unlock(&newsighand->siglock); diff -urpNa linux-2.6.14-rc5-rt5/kernel/fork.c linux-2.6.14-rc5-rt5-sighandRCUfix/kernel/fork.c --- linux-2.6.14-rc5-rt5/kernel/fork.c 2005-10-24 05:59:08.000000000 -0700 +++ linux-2.6.14-rc5-rt5-sighandRCUfix/kernel/fork.c 2005-10-31 15:35:14.000000000 -0800 @@ -816,7 +816,7 @@ static inline int copy_sighand(unsigned return 0; } sig = kmem_cache_alloc(sighand_cachep, GFP_KERNEL); - tsk->sighand = sig; + rcu_assign_pointer(tsk->sighand, sig); if (!sig) return -ENOMEM; spin_lock_init(&sig->siglock); - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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