features/marker-quota: performance optimization.

- abort updation process if delta is zero.

Signed-off-by: Raghavendra G <raghavendra@gluster.com>
Signed-off-by: Anand Avati <avati@gluster.com>

BUG: 2697 (Quota: add-brick creates the size go awkward, though it was perfect earlier)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2697

1 files changed, 10 insertions, 3 deletions

diff --git a/xlators/features/marker/src/marker-quota.c b/xlators/features/marker/src/marker-quota.c
index 0a82cb5fe2a..355ea1d10fe 100644
--- a/xlators/features/marker/src/marker-quota.c
+++ b/xlators/features/marker/src/marker-quota.c
@@ -945,7 +945,8 @@ quota_inodelk_cbk (call_frame_t *frame, void *cookie,
         gf_log (this->name, GF_LOG_DEBUG,
                 "inodelk released on %s", local->parent_loc.path);
 
-        if (strcmp (local->parent_loc.path, "/") == 0) {
+        if ((strcmp (local->parent_loc.path, "/") == 0)
+            || (local->delta == 0)) {
                 xattr_updation_done (frame, NULL, this, 0, 0, NULL);
         } else {
                 ret = get_parent_inode_local (this, local);
@@ -1219,14 +1220,20 @@ unlock:
 
         gf_log (this->name, GF_LOG_DEBUG, "%s %"PRId64 "%"PRId64,
                 local->loc.path, ctx->size, contribution->contribution);
+
+        local->delta = ctx->size - contribution->contribution;
+
+        if (local->delta == 0) {
+                quota_mark_undirty (frame, NULL, this, 0, 0, NULL);
+                return 0;
+        }
+
         newdict = dict_new ();
         if (newdict == NULL) {
                 ret = -1;
                 goto err;
         }
 
-        local->delta = ctx->size - contribution->contribution;
-
         QUOTA_ALLOC_OR_GOTO (delta, int64_t, ret, err);
 
         *delta = hton64 (local->delta);