lkml.org 
[lkml]   [2010]   [Feb]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [patch -mm 4/9 v2] oom: remove compulsory panic_on_oom mode
On Mon, Feb 15, 2010 at 02:20:09PM -0800, David Rientjes wrote:
> If /proc/sys/vm/panic_on_oom is set to 2, the kernel will panic
> regardless of whether the memory allocation is constrained by either a
> mempolicy or cpuset.
>
> Since mempolicy-constrained out of memory conditions now iterate through
> the tasklist and select a task to kill, it is possible to panic the
> machine if all tasks sharing the same mempolicy nodes (including those
> with default policy, they may allocate anywhere) or cpuset mems have
> /proc/pid/oom_adj values of OOM_DISABLE. This is functionally equivalent
> to the compulsory panic_on_oom setting of 2, so the mode is removed.
>
> Signed-off-by: David Rientjes <rientjes@google.com>

What is the point of removing it, though? If it doesn't significantly
help some future patch, just leave it in. It's not worth breaking the
user/kernel interface just to remove 3 trivial lines of code.



\
 
 \ /
  Last update: 2010-02-16 07:23    [W:0.132 / U:0.200 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site