mm/slub.c: convert vnsprintf-static to va_format

Inspired by Joe Perches suggestion in ntfs logging clean-up.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Acked-by: Christoph Lameter <cl@linux.com>
Cc: Joe Perches <joe@perches.com>
Cc: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 9 insertions, 7 deletions

diff --git a/mm/slub.c b/mm/slub.c
index 1594b14e2597..de99d500af6c 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -578,28 +578,30 @@ static void print_page_info(struct page *page)
 
 static void slab_bug(struct kmem_cache *s, char *fmt, ...)
 {
+        struct va_format vaf;
         va_list args;
-        char buf[100];
 
         va_start(args, fmt);
-        vsnprintf(buf, sizeof(buf), fmt, args);
-        va_end(args);
+        vaf.fmt = fmt;
+        vaf.va = &args;
         pr_err("=============================================================================\n");
-        pr_err("BUG %s (%s): %s\n", s->name, print_tainted(), buf);
+        pr_err("BUG %s (%s): %pV\n", s->name, print_tainted(), &vaf);
         pr_err("-----------------------------------------------------------------------------\n\n");
 
         add_taint(TAINT_BAD_PAGE, LOCKDEP_NOW_UNRELIABLE);
+        va_end(args);
 }
 
 static void slab_fix(struct kmem_cache *s, char *fmt, ...)
 {
+        struct va_format vaf;
         va_list args;
-        char buf[100];
 
         va_start(args, fmt);
-        vsnprintf(buf, sizeof(buf), fmt, args);
+        vaf.fmt = fmt;
+        vaf.va = &args;
+        pr_err("FIX %s: %pV\n", s->name, &vaf);
         va_end(args);
-        pr_err("FIX %s: %s\n", s->name, buf);
 }
 
 static void print_trailer(struct kmem_cache *s, struct page *page, u8 *p)