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yaml
---
r: 217441
b: refs/heads/master
c: d19d547
h: refs/heads/master
i:
  217439: a1befe0
v: v3
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David Rientjes authored and Linus Torvalds committed Oct 26, 2010
1 parent bbf617a commit 520b0d4
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Showing 2 changed files with 22 additions and 20 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 723548bff1dde9ab6bdb23f4bb92277c4da49473
refs/heads/master: d19d5476f4b9f91d2de92b91588bb118beba6c0d
40 changes: 21 additions & 19 deletions trunk/fs/proc/base.c
Original file line number Diff line number Diff line change
Expand Up @@ -1042,22 +1042,23 @@ static ssize_t oom_adjust_write(struct file *file, const char __user *buf,
err = -ESRCH;
goto out;
}

task_lock(task);
if (!task->mm) {
err = -EINVAL;
goto err_task_lock;
}

if (!lock_task_sighand(task, &flags)) {
err = -ESRCH;
goto err_task_struct;
goto err_task_lock;
}

if (oom_adjust < task->signal->oom_adj && !capable(CAP_SYS_RESOURCE)) {
err = -EACCES;
goto err_sighand;
}

task_lock(task);
if (!task->mm) {
err = -EINVAL;
goto err_task_lock;
}

if (oom_adjust != task->signal->oom_adj) {
if (oom_adjust == OOM_DISABLE)
atomic_inc(&task->mm->oom_disable_count);
Expand All @@ -1083,11 +1084,10 @@ static ssize_t oom_adjust_write(struct file *file, const char __user *buf,
else
task->signal->oom_score_adj = (oom_adjust * OOM_SCORE_ADJ_MAX) /
-OOM_DISABLE;
err_task_lock:
task_unlock(task);
err_sighand:
unlock_task_sighand(task, &flags);
err_task_struct:
err_task_lock:
task_unlock(task);
put_task_struct(task);
out:
return err < 0 ? err : count;
Expand Down Expand Up @@ -1150,21 +1150,24 @@ static ssize_t oom_score_adj_write(struct file *file, const char __user *buf,
err = -ESRCH;
goto out;
}

task_lock(task);
if (!task->mm) {
err = -EINVAL;
goto err_task_lock;
}

if (!lock_task_sighand(task, &flags)) {
err = -ESRCH;
goto err_task_struct;
goto err_task_lock;
}

if (oom_score_adj < task->signal->oom_score_adj &&
!capable(CAP_SYS_RESOURCE)) {
err = -EACCES;
goto err_sighand;
}

task_lock(task);
if (!task->mm) {
err = -EINVAL;
goto err_task_lock;
}
if (oom_score_adj != task->signal->oom_score_adj) {
if (oom_score_adj == OOM_SCORE_ADJ_MIN)
atomic_inc(&task->mm->oom_disable_count);
Expand All @@ -1181,11 +1184,10 @@ static ssize_t oom_score_adj_write(struct file *file, const char __user *buf,
else
task->signal->oom_adj = (oom_score_adj * OOM_ADJUST_MAX) /
OOM_SCORE_ADJ_MAX;
err_task_lock:
task_unlock(task);
err_sighand:
unlock_task_sighand(task, &flags);
err_task_struct:
err_task_lock:
task_unlock(task);
put_task_struct(task);
out:
return err < 0 ? err : count;
Expand Down

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