multiple files: calloc -> malloc

xlators/cluster/stripe/src/stripe-helpers.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible

xlators/cluster/dht/src/tier.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible
xlators/cluster/dht/src/dht-layout.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible
xlators/cluster/dht/src/dht-helper.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible
xlators/cluster/dht/src/dht-common.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible
xlators/cluster/afr/src/afr.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible
xlators/cluster/afr/src/afr-inode-read.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible
tests/bugs/replicate/bug-1250170-fsync.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible
tests/basic/gfapi/gfapi-async-calls-test.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible
tests/basic/ec/ec-fast-fgetxattr.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible
rpc/xdr/src/glusterfs3.h: Move to GF_MALLOC() instead of GF_CALLOC() when possible
rpc/rpc-transport/socket/src/socket.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible
rpc/rpc-lib/src/rpc-clnt.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible
extras/geo-rep/gsync-sync-gfid.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible
cli/src/cli-xml-output.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible
cli/src/cli-rpc-ops.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible
cli/src/cli-cmd-volume.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible
cli/src/cli-cmd-system.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible
cli/src/cli-cmd-snapshot.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible
cli/src/cli-cmd-peer.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible
cli/src/cli-cmd-global.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible

It doesn't make sense to calloc (allocate and clear) memory
when the code right away fills that memory with data.
It may be optimized by the compiler, or have a microscopic
performance improvement.

In some cases, also changed allocation size to be sizeof some
struct or type instead of a pointer - easier to read.
In some cases, removed redundant strlen() calls by saving the result
into a variable.

1. Only done for the straightforward cases. There's room for improvement.
2. Please review carefully, especially for string allocation, with the
terminating NULL string.

Only compile-tested!

updates: bz#1193929
Original-Author: Yaniv Kaul <ykaul@redhat.com>
Signed-off-by: Yaniv Kaul <ykaul@redhat.com>
Signed-off-by: Amar Tumballi <amarts@redhat.com>

Change-Id: I16274dca4078a1d06ae09a0daf027d734b631ac2

7 files changed, 15 insertions, 13 deletions

diff --git a/cli/src/cli-cmd-global.c b/cli/src/cli-cmd-global.c
index fb2ecb1d3d..3c8ae227ca 100644
--- a/cli/src/cli-cmd-global.c
+++ b/cli/src/cli-cmd-global.c
@@ -57,7 +57,7 @@ cli_cmd_global_help_cbk (struct cli_state *state, struct cli_cmd_word *in_word,
         struct cli_cmd        *global_cmd = NULL;
         int                   count     = 0;
 
-        cmd = GF_CALLOC (1, sizeof (global_cmds), cli_mt_cli_cmd);
+        cmd = GF_MALLOC (sizeof (global_cmds), cli_mt_cli_cmd);
         memcpy (cmd, global_cmds, sizeof (global_cmds));
         count = (sizeof (global_cmds) / sizeof (struct cli_cmd));
         cli_cmd_sort (cmd, count);
diff --git a/cli/src/cli-cmd-peer.c b/cli/src/cli-cmd-peer.c
index 7df60bcb2b..a50ea7c66b 100644
--- a/cli/src/cli-cmd-peer.c
+++ b/cli/src/cli-cmd-peer.c
@@ -284,7 +284,7 @@ cli_cmd_peer_help_cbk (struct cli_state *state, struct cli_cmd_word *in_word,
         cli_out ("\ngluster peer commands");
         cli_out ("======================\n");
 
-        cmd = GF_CALLOC (1, sizeof (cli_probe_cmds), cli_mt_cli_cmd);
+        cmd = GF_MALLOC (sizeof (cli_probe_cmds), cli_mt_cli_cmd);
         memcpy (cmd, cli_probe_cmds, sizeof (cli_probe_cmds));
         count = (sizeof (cli_probe_cmds) / sizeof (struct cli_cmd));
         cli_cmd_sort (cmd, count);
diff --git a/cli/src/cli-cmd-snapshot.c b/cli/src/cli-cmd-snapshot.c
index 06e00c96b7..64cbd42ce5 100644
--- a/cli/src/cli-cmd-snapshot.c
+++ b/cli/src/cli-cmd-snapshot.c
@@ -131,7 +131,7 @@ cli_cmd_snapshot_help_cbk (struct cli_state *state,
         struct cli_cmd        *snap_cmd = NULL;
         int                   count     = 0;
 
-        cmd = GF_CALLOC (1, sizeof (snapshot_cmds), cli_mt_cli_cmd);
+        cmd = GF_MALLOC (sizeof (snapshot_cmds), cli_mt_cli_cmd);
         memcpy (cmd, snapshot_cmds, sizeof (snapshot_cmds));
         count = (sizeof (snapshot_cmds) / sizeof (struct cli_cmd));
         cli_cmd_sort (cmd, count);
diff --git a/cli/src/cli-cmd-system.c b/cli/src/cli-cmd-system.c
index c41594bfa5..995e1b1ad5 100644
--- a/cli/src/cli-cmd-system.c
+++ b/cli/src/cli-cmd-system.c
@@ -592,7 +592,7 @@ cli_cmd_system_help_cbk (struct cli_state *state, struct cli_cmd_word *in_word,
         struct cli_cmd        *system_cmd = NULL;
         int                   count     = 0;
 
-        cmd = GF_CALLOC (1, sizeof (cli_system_cmds), cli_mt_cli_cmd);
+        cmd = GF_MALLOC (sizeof (cli_system_cmds), cli_mt_cli_cmd);
         memcpy (cmd, cli_system_cmds, sizeof (cli_system_cmds));
         count = (sizeof (cli_system_cmds) / sizeof (struct cli_cmd));
         cli_cmd_sort (cmd, count);
diff --git a/cli/src/cli-cmd-volume.c b/cli/src/cli-cmd-volume.c
index b9fd56362c..d8b9e25f19 100644
--- a/cli/src/cli-cmd-volume.c
+++ b/cli/src/cli-cmd-volume.c
@@ -897,6 +897,7 @@ cli_event_remove_brick_str (dict_t *options, char **event_str,
         int32_t        i              = 1;
         int32_t        count          = 0;
         int32_t        eventstrlen    = 1;
+        int            bricklen      = 0;
         char          *tmp_ptr        = NULL;
 
         if (!options || !event_str || !event)
@@ -971,8 +972,9 @@ cli_event_remove_brick_str (dict_t *options, char **event_str,
                         break;
                 }
                 snprintf (tmp_ptr, eventstrlen, "%s ", brick);
-                eventstrlen -= (strlen (brick) + 1);
-                tmp_ptr += (strlen (brick) + 1);
+                bricklen = strlen (brick);
+                eventstrlen -= (bricklen + 1);
+                tmp_ptr += (bricklen + 1);
                 i++;
         }
 
@@ -3504,7 +3506,7 @@ cli_cmd_quota_help_cbk (struct cli_state *state, struct cli_cmd_word *in_word,
         struct cli_cmd        *quota_cmd = NULL;
         int                   count    = 0;
 
-        cmd = GF_CALLOC (1, sizeof (quota_cmds), cli_mt_cli_cmd);
+        cmd = GF_MALLOC (sizeof (quota_cmds), cli_mt_cli_cmd);
         memcpy (cmd, quota_cmds, sizeof (quota_cmds));
         count = (sizeof (quota_cmds) / sizeof (struct cli_cmd));
         cli_cmd_sort (cmd, count);
@@ -3531,7 +3533,7 @@ cli_cmd_bitrot_help_cbk (struct cli_state *state, struct cli_cmd_word *in_word,
         struct cli_cmd        *bitrot_cmd = NULL;
         int                   count    = 0;
 
-        cmd = GF_CALLOC (1, sizeof (bitrot_cmds), cli_mt_cli_cmd);
+        cmd = GF_MALLOC (sizeof (bitrot_cmds), cli_mt_cli_cmd);
         memcpy (cmd, bitrot_cmds, sizeof (bitrot_cmds));
         count = (sizeof (bitrot_cmds) / sizeof (struct cli_cmd));
         cli_cmd_sort (cmd, count);
@@ -3558,7 +3560,7 @@ cli_cmd_tier_help_cbk (struct cli_state *state, struct cli_cmd_word *in_word,
         struct cli_cmd        *tier_cmd = NULL;
         int                   count    = 0;
 
-        cmd = GF_CALLOC (1, sizeof (tier_cmds), cli_mt_cli_cmd);
+        cmd = GF_MALLOC (sizeof (tier_cmds), cli_mt_cli_cmd);
         memcpy (cmd, tier_cmds, sizeof (tier_cmds));
         count = (sizeof (tier_cmds) / sizeof (struct cli_cmd));
         cli_cmd_sort (cmd, count);
@@ -3584,7 +3586,7 @@ cli_cmd_volume_help_cbk (struct cli_state *state, struct cli_cmd_word *in_word,
         struct cli_cmd        *vol_cmd = NULL;
         int                   count    = 0;
 
-        cmd = GF_CALLOC (1, sizeof (volume_cmds), cli_mt_cli_cmd);
+        cmd = GF_MALLOC (sizeof (volume_cmds), cli_mt_cli_cmd);
         memcpy (cmd, volume_cmds, sizeof (volume_cmds));
         count = (sizeof (volume_cmds) / sizeof (struct cli_cmd));
         cli_cmd_sort (cmd, count);
diff --git a/cli/src/cli-rpc-ops.c b/cli/src/cli-rpc-ops.c
index 1e95836e4a..40bd64b983 100644
--- a/cli/src/cli-rpc-ops.c
+++ b/cli/src/cli-rpc-ops.c
@@ -5848,7 +5848,7 @@ gf_cli_gsync_status_output (dict_t *dict, gf_boolean_t is_detail)
         /* gsync_count = number of nodes reporting output.
            each sts_val object will store output of each
            node */
-        sts_vals = GF_CALLOC (gsync_count, sizeof (gf_gsync_status_t *),
+        sts_vals = GF_MALLOC (gsync_count * sizeof (gf_gsync_status_t *),
                               gf_common_mt_char);
         if (!sts_vals) {
                 ret = -1;
@@ -8326,7 +8326,7 @@ xml_end:
                 goto out;
         }
 
-        status.brick = GF_CALLOC (1, PATH_MAX + 256, gf_common_mt_strdup);
+        status.brick = GF_MALLOC (PATH_MAX + 256, gf_common_mt_strdup);
         if (!status.brick) {
                 errno   = ENOMEM;
                 ret     = -1;
diff --git a/cli/src/cli-xml-output.c b/cli/src/cli-xml-output.c
index dcb1715e62..fd42192162 100644
--- a/cli/src/cli-xml-output.c
+++ b/cli/src/cli-xml-output.c
@@ -4138,7 +4138,7 @@ cli_xml_output_vol_gsync_status (dict_t *dict,
         if (ret)
                 goto out;
 
-        status_values = GF_CALLOC (count, sizeof (gf_gsync_status_t *),
+        status_values = GF_MALLOC (count * sizeof (gf_gsync_status_t *),
                               gf_common_mt_char);
         if (!status_values) {
                 ret = -1;