fix-idr-header-for-drbd-compilation.patch

   1 The DRBD module does not compile without that
   2
   3 Those definitions are part of the original RHEL kernel. Not sure
   4 why openvz patches removes that.
   5
   6 --- ../linux-2.6-2.6.32/include/linux/idr.h     2013-11-14 11:18:46.000000000 +0100
   7 +++ linux-2.6.32-358.23.2.el6/include/linux/idr.h       2013-09-14 10:52:55.000000000 +0200
   8 @@ -42,6 +42,12 @@
   9  #define MAX_ID_BIT (1U << MAX_ID_SHIFT)
  10  #define MAX_ID_MASK (MAX_ID_BIT - 1)
  11
  12 +/* Leave the possibility of an incomplete final layer */
  13 +#define MAX_LEVEL (MAX_ID_SHIFT + IDR_BITS - 1) / IDR_BITS
  14 +
  15 +/* Number of id_layer structs to leave in free list */
  16 +#define IDR_FREE_MAX MAX_LEVEL + MAX_LEVEL
  17 +
  18  struct idr_layer {
  19         unsigned long            bitmap; /* A zero bit means "space here" */
  20         struct idr_layer        *ary[1<<IDR_BITS];