drivers/base: 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.

* Line termination only requires one extra space at the end of the
  buffer.  Use PAGE_SIZE - 1 instead of PAGE_SIZE - 2 when formatting.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/base/node.c b/drivers/base/node.c
index a3b82e9c7f20..36fabe43cd44 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -605,7 +605,8 @@ static ssize_t print_nodes_state(enum node_states state, char *buf)
 {
         int n;
 
-        n = nodelist_scnprintf(buf, PAGE_SIZE-2, node_states[state]);
+        n = scnprintf(buf, PAGE_SIZE - 1, "%*pbl",
+                      nodemask_pr_args(&node_states[state]));
         buf[n++] = '\n';
         buf[n] = '\0';
         return n;