This patch replaces printk(KERN_ERR..) with pr_err found under
shrink_slab.  Thus it also reduces one line extra because of formatting.
Signed-off-by: Pintu Kumar <pintu.k@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>