Messages in this thread | | | Date | Thu, 17 Aug 2017 17:30:04 -0400 | From | Steven Rostedt <> | Subject | Re: [PATCH v2] blktrace: Fix potentail deadlock between delete & sysfs ops |
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On Thu, 17 Aug 2017 17:10:07 -0400 Steven Rostedt <rostedt@goodmis.org> wrote:
> Instead of playing games with taking the lock, the only way this race > is hit, is if the partition is being deleted and the sysfs attribute is > being read at the same time, correct? In that case, just return > -ENODEV, and be done with it.
Nevermind that wont work. Too bad there's not a mutex_lock_timeout() that we could use in a loop. It would solve the issue of forward progress with RT tasks, and will break after a timeout in case of deadlock.
-- Steve
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