Commit 80d26af8 authored Feb 27, 2013 by Mandeep Singh Baines Committed by Linus Torvalds Feb 27, 2013

coredump: use a freezable_schedule for the coredump_finish wait



Prevents hung_task detector from panicing the machine. This is also
needed to prevent this wait from blocking suspend.

(It doesnt' currently block suspend but it would once the next
patch in this series is applied.)

[yongjun_wei@trendmicro.com.cn: kernel/exit.c: remove duplicated include]
Signed-off-by: Mandeep Singh Baines <msb@chromium.org>
Cc: Ben Chan <benchan@chromium.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Ingo Molnar <mingo@redhat.com>
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 6aa97070

kernel/exit.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -20,6 +20,7 @@
		#include <linux/tsacct_kern.h>
		#include <linux/file.h>
		#include <linux/fdtable.h>
		#include <linux/freezer.h>
		#include <linux/binfmts.h>
		#include <linux/nsproxy.h>
		#include <linux/pid_namespace.h>
		@@ -31,7 +32,6 @@
		#include <linux/mempolicy.h>
		#include <linux/taskstats_kern.h>
		#include <linux/delayacct.h>
		#include <linux/freezer.h>
		#include <linux/cgroup.h>
		#include <linux/syscalls.h>
		#include <linux/signal.h>
		@@ -485,7 +485,7 @@ static void exit_mm(struct task_struct * tsk)
		set_task_state(tsk, TASK_UNINTERRUPTIBLE);
		if (!self.task) /* see coredump_finish() */
		break;
		schedule();
		freezable_schedule();
		}
		__set_task_state(tsk, TASK_RUNNING);
		down_read(&mm->mmap_sem);

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