tree 3482ecc1445a13fb60941213930078da302869ff
parent 47af81f29556a45493e5c87289c3c16ce911096c
author Peng Tao <tao.peng@primarydata.com> 1415579735 +0800
committer Tom Haynes <loghyr@primarydata.com> 1422990408 -0800

nfs: add nfs_pgio_current_mirror helper

Let it return current nfs_pgio_mirror in use depending on pg_mirror_count.
For read, we always use pg_mirrors[0], so this effectively gives us freedom
to use pg_mirror_idx to track the actual mirror to read from through out the
IO stack.

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <loghyr@primarydata.com>