Multiple files: make root gfid a static variable

In many places we use it, compare to it, etc. It could be a static variable,
as it really doesn't change. I think it's better than initializing to 0
and then doing gfid[15] = 1 or other tricks.

I think there are additional oppportunuties to make more variables static.
This is an attempt at an easy one.

Change-Id: I7f23a30a94056d8f043645371ab841cbd0f90d19
updates: bz#1193929
Signed-off-by: Yaniv Kaul <ykaul@redhat.com>

4 files changed, 4 insertions, 15 deletions

diff --git a/xlators/cluster/dht/src/dht-common.c b/xlators/cluster/dht/src/dht-common.c
index 232685bd56d..b295ce8bd03 100644
--- a/xlators/cluster/dht/src/dht-common.c
+++ b/xlators/cluster/dht/src/dht-common.c
@@ -6395,9 +6395,7 @@ dht_statfs(call_frame_t *frame, xlator_t *this, loc_t *loc, dict_t *xdata)
     int i = -1;
     inode_t *inode = NULL;
     inode_table_t *itable = NULL;
-    uuid_t root_gfid = {
-        0,
-    };
+    static uuid_t root_gfid = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1};
     loc_t newloc = {
         0,
     };
@@ -6423,7 +6421,6 @@ dht_statfs(call_frame_t *frame, xlator_t *this, loc_t *loc, dict_t *xdata)
         }
 
         loc = &local->loc2;
-        root_gfid[15] = 1;
 
         inode = inode_find(itable, root_gfid);
         if (!inode) {
diff --git a/xlators/cluster/dht/src/dht-helper.c b/xlators/cluster/dht/src/dht-helper.c
index 980a562deb2..9d3e3a3a0b2 100644
--- a/xlators/cluster/dht/src/dht-helper.c
+++ b/xlators/cluster/dht/src/dht-helper.c
@@ -1917,9 +1917,7 @@ dht_heal_path(xlator_t *this, char *path, inode_table_t *itable)
     };
     char *bname = NULL;
     char *save_ptr = NULL;
-    uuid_t gfid = {
-        0,
-    };
+    static uuid_t gfid = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1};
     char *tmp_path = NULL;
 
     tmp_path = gf_strdup(path);
@@ -1927,9 +1925,6 @@ dht_heal_path(xlator_t *this, char *path, inode_table_t *itable)
         goto out;
     }
 
-    memset(gfid, 0, 16);
-    gfid[15] = 1;
-
     gf_uuid_copy(loc.pargfid, gfid);
     loc.parent = inode_ref(itable->root);
 
diff --git a/xlators/cluster/dht/src/dht-rebalance.c b/xlators/cluster/dht/src/dht-rebalance.c
index 0bf499abbf3..d4e639db704 100644
--- a/xlators/cluster/dht/src/dht-rebalance.c
+++ b/xlators/cluster/dht/src/dht-rebalance.c
@@ -2447,15 +2447,12 @@ void
 dht_build_root_inode(xlator_t *this, inode_t **inode)
 {
     inode_table_t *itable = NULL;
-    uuid_t root_gfid = {
-        0,
-    };
+    static uuid_t root_gfid = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1};
 
     itable = inode_table_new(0, this);
     if (!itable)
         return;
 
-    root_gfid[15] = 1;
     *inode = inode_find(itable, root_gfid);
 }
 
diff --git a/xlators/cluster/ec/src/ec-helpers.c b/xlators/cluster/ec/src/ec-helpers.c
index baac001d169..48f54475e01 100644
--- a/xlators/cluster/ec/src/ec-helpers.c
+++ b/xlators/cluster/ec/src/ec-helpers.c
@@ -476,7 +476,7 @@ out:
 int32_t
 ec_loc_setup_path(xlator_t *xl, loc_t *loc)
 {
-    uuid_t root = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1};
+    static uuid_t root = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1};
     char *name;
     int32_t ret = -EINVAL;