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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


1008 int kmem_logging = 1;           /* kmem_log_enter() override */
1009 uint32_t kmem_mtbf = 0;         /* mean time between failures [default: off] */
1010 size_t kmem_transaction_log_size; /* transaction log size [2% of memory] */
1011 size_t kmem_content_log_size;   /* content log size [2% of memory] */
1012 size_t kmem_failure_log_size;   /* failure log [4 pages per CPU] */
1013 size_t kmem_slab_log_size;      /* slab create log [4 pages per CPU] */
1014 size_t kmem_content_maxsave = 256; /* KMF_CONTENTS max bytes to log */
1015 size_t kmem_lite_minsize = 0;   /* minimum buffer size for KMF_LITE */
1016 size_t kmem_lite_maxalign = 1024; /* maximum buffer alignment for KMF_LITE */
1017 int kmem_lite_pcs = 4;          /* number of PCs to store in KMF_LITE mode */
1018 size_t kmem_maxverify;          /* maximum bytes to inspect in debug routines */
1019 size_t kmem_minfirewall;        /* hardware-enforced redzone threshold */
1020 
1021 #ifdef _LP64
1022 size_t  kmem_max_cached = KMEM_BIG_MAXBUF;      /* maximum kmem_alloc cache */
1023 #else
1024 size_t  kmem_max_cached = KMEM_BIG_MAXBUF_32BIT; /* maximum kmem_alloc cache */
1025 #endif
1026 
1027 #ifdef DEBUG
1028 int kmem_flags = KMF_AUDIT | KMF_DEADBEEF | KMF_REDZONE | KMF_CONTENTS;
1029 #else
1030 int kmem_flags = 0;
1031 #endif
1032 int kmem_ready;
1033 
1034 static kmem_cache_t     *kmem_slab_cache;
1035 static kmem_cache_t     *kmem_bufctl_cache;
1036 static kmem_cache_t     *kmem_bufctl_audit_cache;
1037 
1038 static kmutex_t         kmem_cache_lock;        /* inter-cache linkage only */
1039 static list_t           kmem_caches;
1040 
1041 static taskq_t          *kmem_taskq;
1042 static kmutex_t         kmem_flags_lock;
1043 static vmem_t           *kmem_metadata_arena;
1044 static vmem_t           *kmem_msb_arena;        /* arena for metadata caches */
1045 static vmem_t           *kmem_cache_arena;
1046 static vmem_t           *kmem_hash_arena;
1047 static vmem_t           *kmem_log_arena;
1048 static vmem_t           *kmem_oversize_arena;
1049 static vmem_t           *kmem_va_arena;
1050 static vmem_t           *kmem_default_arena;




1008 int kmem_logging = 1;           /* kmem_log_enter() override */
1009 uint32_t kmem_mtbf = 0;         /* mean time between failures [default: off] */
1010 size_t kmem_transaction_log_size; /* transaction log size [2% of memory] */
1011 size_t kmem_content_log_size;   /* content log size [2% of memory] */
1012 size_t kmem_failure_log_size;   /* failure log [4 pages per CPU] */
1013 size_t kmem_slab_log_size;      /* slab create log [4 pages per CPU] */
1014 size_t kmem_content_maxsave = 256; /* KMF_CONTENTS max bytes to log */
1015 size_t kmem_lite_minsize = 0;   /* minimum buffer size for KMF_LITE */
1016 size_t kmem_lite_maxalign = 1024; /* maximum buffer alignment for KMF_LITE */
1017 int kmem_lite_pcs = 4;          /* number of PCs to store in KMF_LITE mode */
1018 size_t kmem_maxverify;          /* maximum bytes to inspect in debug routines */
1019 size_t kmem_minfirewall;        /* hardware-enforced redzone threshold */
1020 
1021 #ifdef _LP64
1022 size_t  kmem_max_cached = KMEM_BIG_MAXBUF;      /* maximum kmem_alloc cache */
1023 #else
1024 size_t  kmem_max_cached = KMEM_BIG_MAXBUF_32BIT; /* maximum kmem_alloc cache */
1025 #endif
1026 
1027 #ifdef DEBUG
1028 volatile int kmem_flags = KMF_AUDIT | KMF_DEADBEEF | KMF_REDZONE | KMF_CONTENTS;
1029 #else
1030 volatile int kmem_flags = 0;
1031 #endif
1032 int kmem_ready;
1033 
1034 static kmem_cache_t     *kmem_slab_cache;
1035 static kmem_cache_t     *kmem_bufctl_cache;
1036 static kmem_cache_t     *kmem_bufctl_audit_cache;
1037 
1038 static kmutex_t         kmem_cache_lock;        /* inter-cache linkage only */
1039 static list_t           kmem_caches;
1040 
1041 static taskq_t          *kmem_taskq;
1042 static kmutex_t         kmem_flags_lock;
1043 static vmem_t           *kmem_metadata_arena;
1044 static vmem_t           *kmem_msb_arena;        /* arena for metadata caches */
1045 static vmem_t           *kmem_cache_arena;
1046 static vmem_t           *kmem_hash_arena;
1047 static vmem_t           *kmem_log_arena;
1048 static vmem_t           *kmem_oversize_arena;
1049 static vmem_t           *kmem_va_arena;
1050 static vmem_t           *kmem_default_arena;