On Wed 2007-11-14 22:25:57, Rafael J. Wysocki wrote: > [Andrew, please consider this as 2.6.24 material, thanks.] > --- > From: Johannes Berg <[EMAIL PROTECTED]> > > Lockdep reports a circular locking dependency in the hibernate code > because > - during system boot hibernate code (from an initcall) locks pm_mutex > and then a sysfs buffer mutex via name_to_dev_t > - during regular operation hibernate code locks pm_mutex under a > sysfs buffer mutex because it's called from sysfs methods. > > The deadlock can never happen because during initcall invocation nothing > can write to sysfs yet. This removes the lockdep report by marking the > initcall locking as being in a different class. > > Signed-off-by: Johannes Berg <[EMAIL PROTECTED]> > Cc: Alan Stern <[EMAIL PROTECTED]> > Cc: Peter Zijlstra <[EMAIL PROTECTED]> > Cc: Pavel Machek <[EMAIL PROTECTED]>
ACK... -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
