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-rw-r--r--block/cfq-iosched.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index dbd0207928fb..ed86fb242cd4 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -1714,16 +1714,26 @@ static int cfqg_print_leaf_weight_device(struct seq_file *sf, void *v)
static int cfq_print_weight(struct seq_file *sf, void *v)
{
struct blkcg *blkcg = css_to_blkcg(seq_css(sf));
+ struct cfq_group_data *cgd = blkcg_to_cfqgd(blkcg);
+ unsigned int val = 0;
- seq_printf(sf, "%u\n", blkcg_to_cfqgd(blkcg)->weight);
+ if (cgd)
+ val = cgd->weight;
+
+ seq_printf(sf, "%u\n", val);
return 0;
}
static int cfq_print_leaf_weight(struct seq_file *sf, void *v)
{
struct blkcg *blkcg = css_to_blkcg(seq_css(sf));
+ struct cfq_group_data *cgd = blkcg_to_cfqgd(blkcg);
+ unsigned int val = 0;
+
+ if (cgd)
+ val = cgd->leaf_weight;
- seq_printf(sf, "%u\n", blkcg_to_cfqgd(blkcg)->leaf_weight);
+ seq_printf(sf, "%u\n", val);
return 0;
}