On 05/11, Linus Torvalds wrote: > > On Fri, 11 May 2007, Rafael J. Wysocki wrote: > > > > Therefore, by taking the task_lock() here we make sure that the condition > > is alyways false when we check it for kernel threads. > > Why *test* it then and return anything? > > Why not just doa "task_lock(p); task_unlock(p);" with no return value?
because we should not freeze a kernel thread at FREEZER_USER_SPACE stage? without task_lock() we can see "p->mm != NULL" but not PF_BORROWED_MM. Oleg. - 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/
