3752 want more verifiable dbuf user eviction
Submitted by:   Justin Gibbs <justing@spectralogic.com>
Submitted by:   Will Andrews <willa@spectralogic.com>

*** 24,33 ****
--- 24,36 ----
   */
  
  #ifndef _SYS_ZFS_IOCTL_H
  #define _SYS_ZFS_IOCTL_H
  
+ #ifndef _KERNEL
+ #include <stddef.h>
+ #endif
  #include <sys/cred.h>
  #include <sys/dmu.h>
  #include <sys/zio.h>
  #include <sys/dsl_deleg.h>
  #include <sys/spa.h>