mm: use %*pb[l] to print bitmaps including cpumasks and nodemasks

printk and friends can now format bitmaps using '%*pb[l]'.  cpumask
and nodemask also provide cpumask_pr_args() and nodemask_pr_args()
respectively which can be used to generate the two printf arguments
necessary to format the specified cpu/nodemask.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index c75f4dcec808659dcaa27890c48a2df85076f75f..4721046a134a6b8c6ab177c92cebbc67da02dc9d 100644 (file)
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -2817,8 +2817,7 @@ void mpol_to_str(char *buffer, int maxlen, struct mempolicy *pol)
                        p += snprintf(p, buffer + maxlen - p, "relative");
        }
 
-       if (!nodes_empty(nodes)) {
-               p += snprintf(p, buffer + maxlen - p, ":");
-               p += nodelist_scnprintf(p, buffer + maxlen - p, nodes);
-       }
+       if (!nodes_empty(nodes))
+               p += scnprintf(p, buffer + maxlen - p, ":%*pbl",
+                              nodemask_pr_args(&nodes));
 }