https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=262894
--- Comment #26 from Alexander Motin <m...@freebsd.org> --- (In reply to Mark Johnston from comment #24) ZFS on FreeBSD allocates all I/O memory through UMA, so it is always mapped. But just recently I made it use BIO_UNMAPPED for poor-man's scatter/gather on page boundaries to avoid one memory copy on I/O aggregation. So there should indeed be a mix of virtual and physical (represented as unmapped) addressed I/Os visible. I've even forgot about it myself when looking on this, thinking the unmapped I/O is generated by swapper. ;) But indeed it can be ZFS now. -- You are receiving this mail because: You are the assignee for the bug.
