core: change lk-owner as a 1k buffer

so, NLM can send the lk-owner field directly to the locks translators,
while doing the same effort, also enabled sending maximum of 500 aux gid
over protocol.

Change-Id: I87c2514392748416f7ffe21d5154faad2e413969
Signed-off-by: Amar Tumballi <amar@gluster.com>
BUG: 767229
Reviewed-on: http://review.gluster.com/779
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@gluster.com>

1 files changed, 44 insertions, 0 deletions

diff --git a/libglusterfs/src/globals.c b/libglusterfs/src/globals.c
index 57946f70480..8b641123f15 100644
--- a/libglusterfs/src/globals.c
+++ b/libglusterfs/src/globals.c
@@ -293,6 +293,43 @@ glusterfs_uuid_buf_get ()
         return buf;
 }
 
+/* LKOWNER_BUFFER */
+
+static pthread_key_t lkowner_buf_key;
+static char global_lkowner_buf[GF_LKOWNER_BUF_SIZE];
+void
+glusterfs_lkowner_buf_destroy (void *ptr)
+{
+        if (ptr)
+                FREE (ptr);
+}
+
+int
+glusterfs_lkowner_buf_init ()
+{
+        int ret = 0;
+
+        ret = pthread_key_create (&lkowner_buf_key,
+                                  glusterfs_lkowner_buf_destroy);
+        return ret;
+}
+
+char *
+glusterfs_lkowner_buf_get ()
+{
+        char *buf;
+        int ret = 0;
+
+        buf = pthread_getspecific (lkowner_buf_key);
+        if(!buf) {
+                buf = MALLOC (GF_LKOWNER_BUF_SIZE);
+                ret = pthread_setspecific (lkowner_buf_key, (void *) buf);
+                if(ret)
+                        buf = global_lkowner_buf;
+        }
+        return buf;
+}
+
 int
 glusterfs_globals_init ()
 {
@@ -323,6 +360,13 @@ glusterfs_globals_init ()
                 goto out;
         }
 
+        ret = glusterfs_lkowner_buf_init ();
+        if(ret) {
+                gf_log ("", GF_LOG_CRITICAL,
+                        "ERROR: glusterfs lkowner buffer init failed");
+                goto out;
+        }
+
         gf_mem_acct_enable_set ();
 
         ret = synctask_init ();