diff options
Diffstat (limited to 'kernel/padata.c')
-rw-r--r-- | kernel/padata.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/kernel/padata.c b/kernel/padata.c index c17f772cc315..c6025a48fb49 100644 --- a/kernel/padata.c +++ b/kernel/padata.c @@ -1094,12 +1094,16 @@ EXPORT_SYMBOL(padata_alloc_shell); */ void padata_free_shell(struct padata_shell *ps) { + struct parallel_data *pd; + if (!ps) return; mutex_lock(&ps->pinst->lock); list_del(&ps->list); - padata_free_pd(rcu_dereference_protected(ps->pd, 1)); + pd = rcu_dereference_protected(ps->pd, 1); + if (refcount_dec_and_test(&pd->refcnt)) + padata_free_pd(pd); mutex_unlock(&ps->pinst->lock); kfree(ps); |