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-rw-r--r--mm/oom_kill.c34
1 files changed, 22 insertions, 12 deletions
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index a7b2460e922b..b60913520ef3 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -58,6 +58,7 @@ unsigned long badness(struct task_struct *p, unsigned long uptime)
unsigned long points, cpu_time, run_time;
struct mm_struct *mm;
struct task_struct *child;
+ int oom_adj;
task_lock(p);
mm = p->mm;
@@ -65,6 +66,7 @@ unsigned long badness(struct task_struct *p, unsigned long uptime)
task_unlock(p);
return 0;
}
+ oom_adj = mm->oom_adj;
/*
* The memory size of the process is the basis for the badness.
@@ -148,15 +150,15 @@ unsigned long badness(struct task_struct *p, unsigned long uptime)
points /= 8;
/*
- * Adjust the score by oomkilladj.
+ * Adjust the score by oom_adj.
*/
- if (p->oomkilladj) {
- if (p->oomkilladj > 0) {
+ if (oom_adj) {
+ if (oom_adj > 0) {
if (!points)
points = 1;
- points <<= p->oomkilladj;
+ points <<= oom_adj;
} else
- points >>= -(p->oomkilladj);
+ points >>= -(oom_adj);
}
#ifdef DEBUG
@@ -251,8 +253,12 @@ static struct task_struct *select_bad_process(unsigned long *ppoints,
*ppoints = ULONG_MAX;
}
- if (p->oomkilladj == OOM_DISABLE)
+ task_lock(p);
+ if (p->mm && p->mm->oom_adj == OOM_DISABLE) {
+ task_unlock(p);
continue;
+ }
+ task_unlock(p);
points = badness(p, uptime.tv_sec);
if (points > *ppoints || !chosen) {
@@ -304,8 +310,7 @@ static void dump_tasks(const struct mem_cgroup *mem)
}
printk(KERN_INFO "[%5d] %5d %5d %8lu %8lu %3d %3d %s\n",
p->pid, __task_cred(p)->uid, p->tgid, mm->total_vm,
- get_mm_rss(mm), (int)task_cpu(p), p->oomkilladj,
- p->comm);
+ get_mm_rss(mm), (int)task_cpu(p), mm->oom_adj, p->comm);
task_unlock(p);
} while_each_thread(g, p);
}
@@ -367,8 +372,12 @@ static int oom_kill_task(struct task_struct *p)
* Don't kill the process if any threads are set to OOM_DISABLE
*/
do_each_thread(g, q) {
- if (q->mm == mm && q->oomkilladj == OOM_DISABLE)
+ task_lock(q);
+ if (q->mm == mm && q->mm && q->mm->oom_adj == OOM_DISABLE) {
+ task_unlock(q);
return 1;
+ }
+ task_unlock(q);
} while_each_thread(g, q);
__oom_kill_task(p, 1);
@@ -393,10 +402,11 @@ static int oom_kill_process(struct task_struct *p, gfp_t gfp_mask, int order,
struct task_struct *c;
if (printk_ratelimit()) {
- printk(KERN_WARNING "%s invoked oom-killer: "
- "gfp_mask=0x%x, order=%d, oomkilladj=%d\n",
- current->comm, gfp_mask, order, current->oomkilladj);
task_lock(current);
+ printk(KERN_WARNING "%s invoked oom-killer: "
+ "gfp_mask=0x%x, order=%d, oom_adj=%d\n",
+ current->comm, gfp_mask, order,
+ current->mm ? current->mm->oom_adj : OOM_DISABLE);
cpuset_print_task_mems_allowed(current);
task_unlock(current);
dump_stack();