On Fri, Sep 30, 2016 at 09:04:09AM +0200, Hannes Reinecke wrote: > The list of attached 'rdata' remote port structures is RCU > protected, so there is no need to take the 'disc_mutex' when > traversing it. > Rather we should be using rcu_read_lock() and kref_get_unless_zero() > to validate the entries. > We need, however, take the disc_mutex when deleting an entry; > otherwise we risk clashes with list_add. > > Signed-off-by: Hannes Reinecke <hare@xxxxxxxx> > --- Acked-by: Johannes Thumshirn <jth@xxxxxxxxxx> -- Johannes Thumshirn Storage jthumshirn@xxxxxxx +49 911 74053 689 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: Felix Imendörffer, Jane Smithard, Graham Norton HRB 21284 (AG Nürnberg) Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
