The patch titled
Subject: coredump: use a freezable_schedule for the coredump_finish wait
has been added to the -mm tree. Its filename is
coredump-use-a-freezable_schedule-for-the-coredump_finish-wait.patch
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------------------------------------------------------
From: Mandeep Singh Baines <msb@xxxxxxxxxxxx>
Subject: 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.)
Signed-off-by: Mandeep Singh Baines <msb@xxxxxxxxxxxx>
Cc: Ben Chan <benchan@xxxxxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Rafael J. Wysocki <rjw@xxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/exit.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff -puN kernel/exit.c~coredump-use-a-freezable_schedule-for-the-coredump_finish-wait kernel/exit.c
--- a/kernel/exit.c~coredump-use-a-freezable_schedule-for-the-coredump_finish-wait
+++ a/kernel/exit.c
@@ -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>
@@ -483,7 +484,7 @@ static void exit_mm(struct task_struct *
set_task_state(tsk, TASK_UNINTERRUPTIBLE);
if (self.task) /* see coredump_finish() */
- schedule();
+ freezable_schedule();
__set_task_state(tsk, TASK_RUNNING);
down_read(&mm->mmap_sem);
}
_
Patches currently in -mm which might be from msb@xxxxxxxxxxxx are
vfork-dont-freezer_count-for-in-kernel-users-of-clone_vfork.patch
lockdep-check-that-no-locks-held-at-freeze-time.patch
coredump-cleanup-the-waiting-for-coredump_finish-code.patch
coredump-use-a-freezable_schedule-for-the-coredump_finish-wait.patch
coredump-abort-core-dump-piping-only-due-to-a-fatal-signal.patch
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