From a63d4ac4ab6094c051a5a240260d16117a7a2f86 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 2 Sep 2014 14:46:02 -0400 Subject: [PATCH] percpu: make percpu-km set chunk->populated bitmap properly percpu-km instantiates the whole chunk on creation and doesn't make use of chunk->populated bitmap and leaves it as zero. While this currently doesn't cause any problem, the inconsistency makes it difficult to build further logic on top of chunk->populated. This patch makes percpu-km fill chunk->populated on creation so that the bitmap is always consistent. Signed-off-by: Tejun Heo Acked-by: Christoph Lameter --- mm/percpu-km.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/mm/percpu-km.c b/mm/percpu-km.c index a6e34bc1aff4..67a971b7f745 100644 --- a/mm/percpu-km.c +++ b/mm/percpu-km.c @@ -67,6 +67,9 @@ static struct pcpu_chunk *pcpu_create_chunk(void) chunk->data = pages; chunk->base_addr = page_address(pages) - pcpu_group_offsets[0]; + + bitmap_fill(chunk->populated, nr_pages); + return chunk; } -- 2.20.1