On Sun, 2012-04-29 at 14:07 +0200, Sasha Levin wrote: > On Sun, Apr 29, 2012 at 10:22 AM, Eric W. Biederman > Exactly twp of the patches (out of 14) are taking updates out of > locks. I'm quite sure that doing that in the ftrace case is perfectly > fine, and I'll take a second look at the sched-rt one since there > indeed might be a race caused due to the patch that I've missed. The update of ftrace_enable must be done under the ftrace_lock mutex. With the exception of ftrace_kill() which is a one shot deal that kills ftrace updates until a reboot. -- Steve -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>