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percpu: make percpu-km set chunk->populated bitmap properly

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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@kernel.org>
Acked-by: Christoph Lameter <cl@linux.com>
This commit is contained in:
Tejun Heo 2014-09-02 14:46:02 -04:00
parent a93ace487a
commit a63d4ac4ab
1 changed files with 3 additions and 0 deletions
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3
mm/percpu-km.c
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@ -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;
}