diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-10-08 00:38:00 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-10-08 00:38:00 -0400 |
| commit | b66484cd74706fa8681d051840fe4b18a3da40ff (patch) | |
| tree | e8215e7c25661d25f84abc4b98140c2062d6d5de /kernel/power/process.c | |
| parent | c913fc4146ba7c280e074558d0a461e5c6f07c8a (diff) | |
| parent | 05fd007e46296afb24d15c7d589d535e5a5b9d5c (diff) | |
Merge branch 'akpm' (patches from Andrew)
Merge updates from Andrew Morton:
- fsnotify updates
- ocfs2 updates
- all of MM
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (127 commits)
console: don't prefer first registered if DT specifies stdout-path
cred: simpler, 1D supplementary groups
CREDITS: update Pavel's information, add GPG key, remove snail mail address
mailmap: add Johan Hovold
.gitattributes: set git diff driver for C source code files
uprobes: remove function declarations from arch/{mips,s390}
spelling.txt: "modeled" is spelt correctly
nmi_backtrace: generate one-line reports for idle cpus
arch/tile: adopt the new nmi_backtrace framework
nmi_backtrace: do a local dump_stack() instead of a self-NMI
nmi_backtrace: add more trigger_*_cpu_backtrace() methods
min/max: remove sparse warnings when they're nested
Documentation/filesystems/proc.txt: add more description for maps/smaps
mm, proc: fix region lost in /proc/self/smaps
proc: fix timerslack_ns CAP_SYS_NICE check when adjusting self
proc: add LSM hook checks to /proc/<tid>/timerslack_ns
proc: relax /proc/<tid>/timerslack_ns capability requirements
meminfo: break apart a very long seq_printf with #ifdefs
seq/proc: modify seq_put_decimal_[u]ll to take a const char *, not char
proc: faster /proc/*/status
...
Diffstat (limited to 'kernel/power/process.c')
| -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; |
