dmamem_unmap the memory before dmamem_freeig it.

only affects unaligned transfers (such as disklabel, fsck and dump).
we used to get away w/ this due to older pmap, uvm or both.
be more precise w/ double-buffer on command failure as well.
once at it, allow more than 1 segment for double-buffer to be allocated.
also fix a couple of endianesses and command timeouts.

0 files changed, 0 insertions, 0 deletions