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Merge tag 'dma-buf-for-4.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git...
[firefly-linux-kernel-4.4.55.git]
/
block
/
blk-throttle.c
diff --git
a/block/blk-throttle.c
b/block/blk-throttle.c
index 9273d0969ebd6377a02cf0be189d34ea619afe3e..5b9c6d5c3636ad6412c7b898c44e4709b35597d1 100644
(file)
--- a/
block/blk-throttle.c
+++ b/
block/blk-throttle.c
@@
-1292,6
+1292,9
@@
static u64 tg_prfill_cpu_rwstat(struct seq_file *sf,
struct blkg_rwstat rwstat = { }, tmp;
int i, cpu;
+ if (tg->stats_cpu == NULL)
+ return 0;
+
for_each_possible_cpu(cpu) {
struct tg_stats_cpu *sc = per_cpu_ptr(tg->stats_cpu, cpu);