lkml.org 
[lkml]   [2013]   [Nov]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [patch 1/2] autofs4: allow autofs to work outside the initial PID namespace
On 11/18, Ian Kent wrote:
>
> It might be sufficient to surround the contents of show_options() with a
> lock on wq_mutex and update the check at the top to
>
> "lock; if (!sbi || sbi->catatonic) {unlock, return 0; } ..."

Or perhaps you can add synchronize_rcu() after swap(oz_pgrp, new_pid),
then show_options() can use rcu_read_lock().

This makes me think that we want put_pid_rcu() but I do not see a
simple way to implement it without synchronize_rcu or kmalloc...

Oleg.



\
 
 \ /
  Last update: 2013-11-18 19:41    [W:0.122 / U:0.080 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site