tree 04599b1f6c5f8bf501a1070b5ab7269a9a97fece
parent 04a419f908b5291ff7e8ffd7aa351fa0ac0c08af
author Sage Weil <sage@newdream.net> 1261599151 -0800
committer Sage Weil <sage@newdream.net> 1261599151 -0800

ceph: support ceph_pagelist for message payload

The ceph_pagelist is a simple list of whole pages, strung together via
their lru list_head.  It facilitates encoding to a "buffer" of unknown
size.  Allow its use in place of the ceph_msg page vector.

This will be used to fix the huge buffer preallocation woes of MDS
reconnection.

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