tree 53329ba229bf0d7bc73c433a664ea551828444c9
parent 03772d2f00313bb22d91b2019cb8e6e91b415653
author Trond Myklebust <trond.myklebust@primarydata.com> 1440538705 -0400
committer Trond Myklebust <trond.myklebust@primarydata.com> 1440546163 -0400

NFSv4.1/flexfiles: Allow coalescing of new layout segments and existing ones

In order to ensure atomicity of updates, we merge the old layout segments
into the new ones, and then invalidate the old ones.

Also ensure that we order the list of layout segments so that
RO segments are preferred over RW.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>