3748 zfs headers should be C++ compatible
Submitted by:   Justin Gibbs <justing@spectralogic.com>
Submitted by:   Will Andrews <willa@spectralogic.com>
Reviewed by:    Matthew Ahrens <mahrens@delphix.com>

*** 36,47 ****
  #include <sys/dmu.h>
  #include <sys/spa.h>
  
  typedef struct arc_buf_hdr arc_buf_hdr_t;
  typedef struct arc_buf arc_buf_t;
! typedef void arc_done_func_t(zio_t *zio, arc_buf_t *buf, void *private);
! typedef int arc_evict_func_t(void *private);
  
  /* generic arc_done_func_t's which you can use */
  arc_done_func_t arc_bcopy_func;
  arc_done_func_t arc_getbuf_func;
  
--- 36,47 ----
  #include <sys/dmu.h>
  #include <sys/spa.h>
  
  typedef struct arc_buf_hdr arc_buf_hdr_t;
  typedef struct arc_buf arc_buf_t;
! typedef void arc_done_func_t(zio_t *zio, arc_buf_t *buf, void *cb_private);
! typedef int arc_evict_func_t(void *cb_private);
  
  /* generic arc_done_func_t's which you can use */
  arc_done_func_t arc_bcopy_func;
  arc_done_func_t arc_getbuf_func;
  
*** 100,117 ****
  #ifdef ZFS_DEBUG
  int arc_referenced(arc_buf_t *buf);
  #endif
  
  int arc_read(zio_t *pio, spa_t *spa, const blkptr_t *bp,
!     arc_done_func_t *done, void *private, int priority, int flags,
      uint32_t *arc_flags, const zbookmark_t *zb);
  zio_t *arc_write(zio_t *pio, spa_t *spa, uint64_t txg,
      blkptr_t *bp, arc_buf_t *buf, boolean_t l2arc, const zio_prop_t *zp,
!     arc_done_func_t *ready, arc_done_func_t *done, void *private,
      int priority, int zio_flags, const zbookmark_t *zb);
  
! void arc_set_callback(arc_buf_t *buf, arc_evict_func_t *func, void *private);
  int arc_buf_evict(arc_buf_t *buf);
  
  void arc_flush(spa_t *spa);
  void arc_tempreserve_clear(uint64_t reserve);
  int arc_tempreserve_space(uint64_t reserve, uint64_t txg);
--- 100,118 ----
  #ifdef ZFS_DEBUG
  int arc_referenced(arc_buf_t *buf);
  #endif
  
  int arc_read(zio_t *pio, spa_t *spa, const blkptr_t *bp,
!     arc_done_func_t *done, void *cb_private, int priority, int flags,
      uint32_t *arc_flags, const zbookmark_t *zb);
  zio_t *arc_write(zio_t *pio, spa_t *spa, uint64_t txg,
      blkptr_t *bp, arc_buf_t *buf, boolean_t l2arc, const zio_prop_t *zp,
!     arc_done_func_t *ready, arc_done_func_t *done, void *cb_private,
      int priority, int zio_flags, const zbookmark_t *zb);
  
! void arc_set_callback(arc_buf_t *buf, arc_evict_func_t *func,
!     void *cb_private);
  int arc_buf_evict(arc_buf_t *buf);
  
  void arc_flush(spa_t *spa);
  void arc_tempreserve_clear(uint64_t reserve);
  int arc_tempreserve_space(uint64_t reserve, uint64_t txg);