[PATCH v1] ringbuffer: Don't choose the process with adj equal OOM_SCORE_ADJ_MIN

[Zhaoyang Huang]

Don't choose the process with adj == OOM_SCORE_ADJ_MIN which
over-allocating pages for ring buffers.

Signed-off-by: Zhaoyang Huang <zhaoyang.hu...@spreadtrum.com>
---
 kernel/trace/ring_buffer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index 5f38398..1005d73 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -1135,7 +1135,7 @@ static int rb_check_pages(struct ring_buffer_per_cpu 
*cpu_buffer)
 static int __rb_allocate_pages(long nr_pages, struct list_head *pages, int cpu)
 {
        struct buffer_page *bpage, *tmp;
-       bool user_thread = current->mm != NULL;
+       bool user_thread = (current->mm != NULL && 
current->signal->oom_score_adj != OOM_SCORE_ADJ_MIN);
        gfp_t mflags;
        long i;
 
-- 
1.9.1