[lkml]   [2012]   [Jun]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: deferring __fput()
On Sun, Jun 24, 2012 at 05:33:10PM +0200, Oleg Nesterov wrote:
> No, we can't do this?
> OK, perhaps we can check something else instead of PF_EXITING.
> But somehow we should ensuree that if task_work_add(twork) succeeds,
> then twork->func() will be called. IOW, if task_work_add() races with
> the exiting task, it should not succeed after exit_task_work().

Hrm... I still think that callers can bloody well check it themselves,
but anyway - we can add a new PF_... bit and have it set on kernel threads
(all along) and during exit_task_work(); the real question is in locking
and barriers needed there. Suggestions?

 \ /
  Last update: 2012-06-25 08:41    [W:0.193 / U:0.240 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site