On Mon, Mar 18, 2013 at 06:28:53PM -0400, Jörn Engel wrote: > It is possible for one thread to to take se_sess->sess_cmd_lock in > core_tmr_abort_task() before taking a reference count on > se_cmd->cmd_kref, while another thread in target_put_sess_cmd() drops > se_cmd->cmd_kref before taking se_sess->sess_cmd_lock. > > This introduces kref_put_and_lock() and uses it in > target_put_sess_cmd() to close the race window.
We already have kref_put_mutex(), why not just call this kref_put_spinlock()? thanks, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
