glusterd: Use uint32_t for peerinfo generation number

Using a uint64_t for the peerinfo generation number was overkill for how
the generation number is used within GlusterD. It also prevented
GlusterD from running on 32-bit architechtures, as uatomic_add_return
doesn't support 64-bit values on 32-bit architechtures.

This change was developed on the git branch at [1]. This commit is a
combination of the following commits on the development branch.
  b78dba4 Use 32-bit generation number
  2c37e4b Change other generation number variables to uint32_t

[1]: https://github.com/kshlm/glusterfs/tree/urcu

Change-Id: I0f310f56a4fb97d6bcbc23255a379ed5bb1ed9e1
BUG: 1205186
Signed-off-by: Kaushal M <kaushal@redhat.com>
Reviewed-on: http://review.gluster.org/10425
Reviewed-by: Anand Nekkunti <anekkunt@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Emmanuel Dreyfus <manu@netbsd.org>
Tested-by: Emmanuel Dreyfus <manu@netbsd.org>
Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com>
Tested-by: Krishnan Parthasarathi <kparthas@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/xlators/mgmt/glusterd/src/glusterd-op-sm.h b/xlators/mgmt/glusterd/src/glusterd-op-sm.h
index f6eaa372f35..6a1baa46f39 100644
--- a/xlators/mgmt/glusterd/src/glusterd-op-sm.h
+++ b/xlators/mgmt/glusterd/src/glusterd-op-sm.h
@@ -103,7 +103,7 @@ struct glusterd_op_info_ {
         int32_t                         op_errno;
         char                            *op_errstr;
         struct  cds_list_head           pending_bricks;
-        uint64_t                        txn_generation;
+        uint32_t                        txn_generation;
 };
 
 typedef struct glusterd_op_info_ glusterd_op_info_t;