[PATCH] block: cfq_cpd_alloc() should use @gfp

[Tejun Heo]

Re: [bug report] blkcg: replace blkcg_policy->cpd_size with
 ->cpd_alloc/free_fn() methods
Reply-To: 
In-Reply-To: <20161110133426.GA30610@mwanda>

cfq_cpd_alloc() which is the cpd_alloc_fn implementation for cfq was
incorrectly hard coding GFP_KERNEL instead of using the mask specified
through the @gfp parameter.  This currently doesn't cause any actual
issues because all current callers specify GFP_KERNEL.  Fix it.

Signed-off-by: Tejun Heo <t...@kernel.org>
Reported-by: Dan Carpenter <dan.carpen...@oracle.com>
Fixes: e4a9bde9589f ("blkcg: replace blkcg_policy->cpd_size with 
->cpd_alloc/free_fn() methods")
---
 block/cfq-iosched.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index 5e24d88..3ab6807 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -1596,7 +1596,7 @@ static struct blkcg_policy_data *cfq_cpd_alloc(gfp_t gfp)
 {
        struct cfq_group_data *cgd;
 
-       cgd = kzalloc(sizeof(*cgd), GFP_KERNEL);
+       cgd = kzalloc(sizeof(*cgd), gfp);
        if (!cgd)
                return NULL;
        return &cgd->cpd;