Index: sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_zfetch.c
===================================================================
--- sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_zfetch.c	(wersja 180660)
+++ sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_zfetch.c	(kopia robocza)
@@ -38,10 +38,6 @@
  */
 
 int zfs_prefetch_disable = 0;
-SYSCTL_DECL(_vfs_zfs);
-TUNABLE_INT("vfs.zfs.prefetch_disable", &zfs_prefetch_disable);
-SYSCTL_INT(_vfs_zfs, OID_AUTO, prefetch_disable, CTLFLAG_RDTUN,
-    &zfs_prefetch_disable, 0, "Disable prefetch");
 
 /* max # of streams per zfetch */
 uint32_t	zfetch_max_streams = 8;
@@ -52,6 +48,25 @@
 /* number of bytes in a array_read at which we stop prefetching (1Mb) */
 uint64_t	zfetch_array_rd_sz = 1024 * 1024;
 
+SYSCTL_DECL(_vfs_zfs);
+TUNABLE_INT("vfs.zfs.prefetch_disable", &zfs_prefetch_disable);
+SYSCTL_INT(_vfs_zfs, OID_AUTO, prefetch_disable, CTLFLAG_RDTUN,
+    &zfs_prefetch_disable, 0, "Disable prefetch");
+SYSCTL_NODE(_vfs_zfs, OID_AUTO, zfetch, CTLFLAG_RW, 0, "ZFS ZFETCH");
+TUNABLE_INT("vfs.zfs.zfetch.max_streams", &zfetch_max_streams);
+SYSCTL_UINT(_vfs_zfs_zfetch, OID_AUTO, max_streams, CTLFLAG_RDTUN,
+    &zfetch_max_streams, 0, "Max # of streams per zfetch");
+TUNABLE_INT("vfs.zfs.zfetch.min_sec_reap", &zfetch_min_sec_reap);
+SYSCTL_UINT(_vfs_zfs_zfetch, OID_AUTO, min_sec_reap, CTLFLAG_RDTUN,
+    &zfetch_min_sec_reap, 0, "Min time before stream reclaim");
+TUNABLE_INT("vfs.zfs.zfetch.block_cap", &zfetch_block_cap);
+SYSCTL_UINT(_vfs_zfs_zfetch, OID_AUTO, block_cap, CTLFLAG_RDTUN,
+    &zfetch_block_cap, 0, "Max number of blocks to fetch at a time");
+TUNABLE_QUAD("vfs.zfs.zfetch.array_rd_sz", &zfetch_array_rd_sz);
+SYSCTL_QUAD(_vfs_zfs_zfetch, OID_AUTO, array_rd_sz, CTLFLAG_RDTUN,
+    &zfetch_array_rd_sz, 0,
+    "Number of bytes in a array_read at which we stop prefetching");
+
 /* forward decls for static routines */
 static int		dmu_zfetch_colinear(zfetch_t *, zstream_t *);
 static void		dmu_zfetch_dofetch(zfetch_t *, zstream_t *);