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Date: Fri, 22 Aug 2014 12:53:11 -0400 From: Tejun Heo <tj@...nel.org> To: akpm@...ux-foundation.org, cl@...ux-foundation.org Cc: laijs@...fujitsu.com, linux-kernel@...r.kernel.org, vgoyal@...hat.com, Tejun Heo <tj@...nel.org> Subject: [PATCH 07/15] 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 <tj@...nel.org> --- mm/percpu-km.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/mm/percpu-km.c b/mm/percpu-km.c index a6e34bc..67a971b 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; } -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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