kmalloc() may fail, if so return -ENOMEM.
Signed-off-by: NKulikov Vasiliy <segooon@gmail.com>
Acked-by: NPekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>