exofs: Remove unused data_map member from exofs_sb_info

The struct pnfs_osd_data_map data_map member of exofs_sb_info was
never used after mount. In fact all it's members were duplicated
by the ore_layout structure. So just remove the duplicated information.

Also removed some stupid, but perfectly supported, restrictions on
layout parameters. The case where num_devices is not divisible by
mirror_count+1 is perfectly fine since the rotating device view
will eventually use all the devices it can get.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Benny Halevy <bhalevy@tonian.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/scsi/osd_ore.h b/include/scsi/osd_ore.h
index 954292a23767..f7fabb478877 100644
--- a/include/scsi/osd_ore.h
+++ b/include/scsi/osd_ore.h
@@ -34,6 +34,8 @@ struct ore_comp {
 
 struct ore_layout {
         /* Our way of looking at the data_map */
+        enum pnfs_osd_raid_algorithm4
+                 raid_algorithm;
         unsigned stripe_unit;
         unsigned mirrors_p1;