tree 83ed8068f3b0c1138601a763657aa3a2335fd24e
parent 54ae0756e3847f4350ba24271a2a38be1263dd67
author Alex Elder <elder@inktank.com> 1362182415 -0600
committer Sage Weil <sage@inktank.com> 1367468181 -0700

ceph: use calc_pages_for() in start_read()

There's a spot that computes the number of pages to allocate for a
page-aligned length by just shifting it.  Use calc_pages_for()
instead, to be consistent with usage everywhere else.  The result
is the same.

The reason for this is to make it clearer in an upcoming patch that
this calculation is duplicated.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>