UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

oom: avoid sending exiting tasks a SIGKILL 

It's unnecessary to SIGKILL a task that is already PF_EXITING and can
actually cause a NULL pointer dereference of the sighand if it has already
been detached.  Instead, simply set TIF_MEMDIE so it has access to memory
reserves and can quickly exit as the comment implies.

Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: David Rientjes <rientjes@google.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Rientjes 2010-08-09 17:18:49 -07:00 committed by Linus Torvalds
parent 7b98c2e402
commit 4358997ae3
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
mm/oom_kill.c
View File

@ -453,7 +453,7 @@ static int oom_kill_process(struct task_struct *p, gfp_t gfp_mask, int order,
* its children or threads, just set TIF_MEMDIE so it can die quickly
*/
if (p->flags & PF_EXITING) {
__oom_kill_task(p, 0);
set_tsk_thread_flag(p, TIF_MEMDIE);
return 0;
}