diff options
Diffstat (limited to 'kernel/power')
-rw-r--r-- | kernel/power/process.c | 17 |
1 files changed, 3 insertions, 14 deletions
diff --git a/kernel/power/process.c b/kernel/power/process.c index 8f27d5a8adf6..2fba066e125f 100644 --- a/kernel/power/process.c +++ b/kernel/power/process.c | |||
@@ -144,23 +144,12 @@ int freeze_processes(void) | |||
144 | /* | 144 | /* |
145 | * Now that the whole userspace is frozen we need to disbale | 145 | * Now that the whole userspace is frozen we need to disbale |
146 | * the OOM killer to disallow any further interference with | 146 | * the OOM killer to disallow any further interference with |
147 | * killable tasks. | 147 | * killable tasks. There is no guarantee oom victims will |
148 | * ever reach a point they go away we have to wait with a timeout. | ||
148 | */ | 149 | */ |
149 | if (!error && !oom_killer_disable()) | 150 | if (!error && !oom_killer_disable(msecs_to_jiffies(freeze_timeout_msecs))) |
150 | error = -EBUSY; | 151 | error = -EBUSY; |
151 | 152 | ||
152 | /* | ||
153 | * There is a hard to fix race between oom_reaper kernel thread | ||
154 | * and oom_killer_disable. oom_reaper calls exit_oom_victim | ||
155 | * before the victim reaches exit_mm so try to freeze all the tasks | ||
156 | * again and catch such a left over task. | ||
157 | */ | ||
158 | if (!error) { | ||
159 | pr_info("Double checking all user space processes after OOM killer disable... "); | ||
160 | error = try_to_freeze_tasks(true); | ||
161 | pr_cont("\n"); | ||
162 | } | ||
163 | |||
164 | if (error) | 153 | if (error) |
165 | thaw_processes(); | 154 | thaw_processes(); |
166 | return error; | 155 | return error; |