Re: [PATCH] fix remaining list_for_each_safe_rcu in -mm

[Corey Minyard <minyard@acm.org>]

Sorry for the long delay, I've been travelling and giving presentations :(.

IIRC, the RCU operations are "safe" by nature, so this is fine.

-Corey

Paul E. McKenney wrote:

>Hello!
>
>I missed a use of list_for_each_rcu_safe() in -mm tree.  Here is a patch
>to fix it.
>
>Signed-off-by: <paulmck@us.ibm.com>
>
>---
>
> ipmi_msghandler.c |    5 ++---
> 1 files changed, 2 insertions(+), 3 deletions(-)
>
>diff -urpNa -X dontdiff linux-2.6.14-rc5-mm1/drivers/char/ipmi/ipmi_msghandler.c linux-2.6.14-rc5-mm1-safe_rcu/drivers/char/ipmi/ipmi_msghandler.c
>--- linux-2.6.14-rc5-mm1/drivers/char/ipmi/ipmi_msghandler.c	2005-11-01 06:44:09.000000000 -0800
>+++ linux-2.6.14-rc5-mm1-safe_rcu/drivers/char/ipmi/ipmi_msghandler.c	2005-11-01 07:00:50.000000000 -0800
>@@ -788,7 +788,7 @@ int ipmi_destroy_user(ipmi_user_t user)
> 	int              i;
> 	unsigned long    flags;
> 	struct cmd_rcvr  *rcvr;
>-	struct list_head *entry1, *entry2;
>+	struct list_head *entry1;
> 	struct cmd_rcvr  *rcvrs = NULL;
> 
> 	user->valid = 1;
>@@ -813,8 +813,7 @@ int ipmi_destroy_user(ipmi_user_t user)
> 	 * synchronize_rcu()) then free everything in that list.
> 	 */
> 	spin_lock_irqsave(&intf->cmd_rcvrs_lock, flags);
>-	list_for_each_safe_rcu(entry1, entry2, &intf->cmd_rcvrs) {
>-		rcvr = list_entry(entry1, struct cmd_rcvr, link);
>+	list_for_each_entry_rcu(entry1, &intf->cmd_rcvrs, link) {
> 		if (rcvr->user == user) {
> 			list_del_rcu(&rcvr->link);
> 			rcvr->next = rcvrs;
>  
>

-
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