db708a6e2c
Add statistics for ZFS prefetch (sysctl kstat.zfs.misc.zfetchstats) Partial import of OpenSolaris onnv revision 10474:0e96dd3b905a Reported by: jhell@dataix.net (private e-mail) [1] Approved by: pjd, delphij (mentor) Obtained from: OpenSolaris (Bug ID 6859997, 6868951) MFC after: 3 days