Re: [RFC] ps command race fix

From: KAMEZAWA Hiroyuki
Date: Mon Jul 24 2006 - 22:03:57 EST

On Mon, 24 Jul 2006 18:48:47 -0700
Paul Jackson <pj@xxxxxxx> wrote:

> Another possibility (perhaps a really stupid idea ;) would be to
> snapshot the list of pids on the open, and let the readdir() just
> access that fixed array.
> The kernel/cpuset.c cpuset_tasks_open() routine that displays the
> pids of tasks in a cpuset (the per-cpuset 'tasks' file) does this.
Oh. thank you for informing :) I don't know about that.
I'll look into.

> Then the seek and read and such semantics are nice and stable and
> simple.
I think snapshot at open() is okay.


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