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percpu: fix static checker warnings in pcpu_destroy_chunk

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From 5021b97f4026334d2c8dfad80797dd1028cddd73 Mon Sep 17 00:00:00 2001
From: Dennis Zhou <[email protected]>
Date: Thu, 29 Jun 2017 07:11:41 -0700

Add NULL check in pcpu_destroy_chunk to correct static checker warnings.

Signed-off-by: Dennis Zhou <[email protected]>
Reported-by: Dan Carpenter <[email protected]>
Signed-off-by: Tejun Heo <[email protected]>
This commit is contained in:
Dennis Zhou 2017-06-29 10:56:26 -04:00 • committed by Tejun Heo
commit e3efe3db93
2 changed files with 8 additions and 2 deletions
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5
mm/percpu-km.c
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@ -82,10 +82,13 @@ static void pcpu_destroy_chunk(struct pcpu_chunk *chunk)
{
const int nr_pages = pcpu_group_sizes[0] >> PAGE_SHIFT;
if (!chunk)
return;
pcpu_stats_chunk_dealloc();
trace_percpu_destroy_chunk(chunk->base_addr);
if (chunk && chunk->data)
if (chunk->data)
__free_pages(chunk->data, order_base_2(nr_pages));
pcpu_free_chunk(chunk);
}