tree e48c6a6ffb96780d562943dfc45c78a0a7edc0cd
parent 79e3057c4c9d32b88e6745fd220d91b0a8b2030b
author Yehuda Sadeh <yehuda@hq.newdream.net> 1311358348 -0700
committer Sage Weil <sage@newdream.net> 1311704954 -0700

ceph: set up readahead size when rsize is not passed

This should improve the default read performance, as without it
readahead is practically disabled.

Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>