NEX-10069 ZFS_READONLY is a little too strict (fix test lint)
NEX-9553 Move ss_fill gap logic from scan algorithm into range_tree.c
Reviewed by: Roman Strashkin <roman.strashkin@nexenta.com>
Reviewed by: Yuri Pankov <yuri.pankov@nexenta.com>
NEX-6088 ZFS scrub/resilver take excessively long due to issuing lots of random IO
Reviewed by: Roman Strashkin <roman.strashkin@nexenta.com>
Reviewed by: Sanjay Nadkarni <sanjay.nadkarni@nexenta.com>
re #13613 rb4516 Tunables needs volatile keyword

*** 1023,1035 ****
  #else
  size_t  kmem_max_cached = KMEM_BIG_MAXBUF_32BIT; /* maximum kmem_alloc cache */
  #endif
  
  #ifdef DEBUG
! int kmem_flags = KMF_AUDIT | KMF_DEADBEEF | KMF_REDZONE | KMF_CONTENTS;
  #else
! int kmem_flags = 0;
  #endif
  int kmem_ready;
  
  static kmem_cache_t     *kmem_slab_cache;
  static kmem_cache_t     *kmem_bufctl_cache;
--- 1023,1035 ----
  #else
  size_t  kmem_max_cached = KMEM_BIG_MAXBUF_32BIT; /* maximum kmem_alloc cache */
  #endif
  
  #ifdef DEBUG
! volatile int kmem_flags = KMF_AUDIT | KMF_DEADBEEF | KMF_REDZONE | KMF_CONTENTS;
  #else
! volatile int kmem_flags = 0;
  #endif
  int kmem_ready;
  
  static kmem_cache_t     *kmem_slab_cache;
  static kmem_cache_t     *kmem_bufctl_cache;