This keeps bdi setup/teardown in line with client life cycle.
Signed-off-by: NSage Weil <sage@newdream.net>

This simplifies much of the error handling during mount.  It also means
that we have the mount args before client creation, and we can initialize
based on those options.
Signed-off-by: NSage Weil <sage@newdream.net>

Clearly demark int and string argument options, and do not try to convert
string arguments to ints.
Signed-off-by: NSage Weil <sage@newdream.net>

Signed-off-by: NSage Weil <sage@newdream.net>

Since we've increased the max mon count, we shouldn't put the addr array
on the parse_mount_args stack.  Put it on the heap instead.
Signed-off-by: NSage Weil <sage@newdream.net>

Get rid of separate max mon limit; use the system limit instead.  This
allows mounts when there are lots of mon addrs provided by mount.ceph (as
with a host with lots of A/AAAA records).
Signed-off-by: NSage Weil <sage@newdream.net>

Initialized bdi->ra_pages to enable readahead.  Use 512KB default.
Signed-off-by: NSage Weil <sage@newdream.net>

Writeback doesn't work without the bdi set, and writeback on
umount doesn't work if we unregister the bdi too early.
Signed-off-by: NSage Weil <sage@newdream.net>

Signed-off-by: NSage Weil <sage@newdream.net>

Kill the old git revision; print the ceph version and protocol
versions instead.
Signed-off-by: NSage Weil <sage@newdream.net>

Mount option parsing, client setup and teardown, and a few odds and
ends (e.g., statfs).
Signed-off-by: NSage Weil <sage@newdream.net>