The patch titled
freezer: take kernel_execve into consideration
has been added to the -mm tree. Its filename is
freezer-take-kernel_execve-into-consideration.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: freezer: take kernel_execve into consideration
From: Rafael J. Wysocki <rjw@xxxxxxx>
Kernel threads can become userland processes by calling kernel_execve(). In
particular, this may happen right after
try_to_freeze_tasks(FREEZER_USER_SPACE) has returned, so try_to_freeze_tasks()
needs to take userspace processes into consideration even if it is called with
FREEZER_KERNEL_THREADS.
Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx>
Acked-by: Pavel Machek <pavel@xxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Aneesh Kumar <aneesh.kumar@xxxxxxxxx>
Cc: "Paul E. McKenney" <paulmck@xxxxxxxxxxxxxxxxxx>
Cc: Srivatsa Vaddagiri <vatsa@xxxxxxxxxx>
Cc: Gautham R Shenoy <ego@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/power/process.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff -puN kernel/power/process.c~freezer-take-kernel_execve-into-consideration kernel/power/process.c
--- a/kernel/power/process.c~freezer-take-kernel_execve-into-consideration
+++ a/kernel/power/process.c
@@ -127,7 +127,7 @@ static unsigned int try_to_freeze_tasks(
cancel_freezing(p);
continue;
}
- if (is_user_space(p) == !freeze_user_space)
+ if (freeze_user_space && !is_user_space(p))
continue;
freeze_process(p);
@@ -154,7 +154,7 @@ static unsigned int try_to_freeze_tasks(
TIMEOUT / HZ, todo);
read_lock(&tasklist_lock);
do_each_thread(g, p) {
- if (is_user_space(p) == !freeze_user_space)
+ if (freeze_user_space && !is_user_space(p))
continue;
task_lock(p);
_
Patches currently in -mm which might be from rjw@xxxxxxx are
make-xfs-workqueues-nonfreezable.patch
fix-refrigerator-vs-thaw_process-race.patch
freezer-task-exit_state-should-be-treated-as-bolean.patch
documentation-ask-driver-writers-to-provide-pm-support.patch
freezer-read-pf_borrowed_mm-in-a-nonracy-way.patch
freezer-close-theoretical-race-between-refrigerator-and-thaw_tasks.patch
freezer-remove-pf_nofreeze-from-rcutorture-thread.patch
freezer-remove-pf_nofreeze-from-bluetooth-threads.patch
freezer-add-try_to_freeze-calls-to-all-kernel-threads.patch
freezer-fix-vfork-problem.patch
freezer-take-kernel_execve-into-consideration.patch
shrink_slab-handle-bad-shrinkers.patch
-
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