Keep Puma 5compatibility checks

config/puma.example.development.rb

@@ -80,10 +80,14 @@ tag 'gitlab-puma-worker'
 worker_timeout 60
 
 # https://github.com/puma/puma/blob/master/5.0-Upgrade.md#lower-latency-better-throughput
-wait_for_less_busy_worker ENV.fetch('PUMA_WAIT_FOR_LESS_BUSY_WORKER', 0.001).to_f
+if defined?(wait_for_less_busy_worker)
+  wait_for_less_busy_worker ENV.fetch('PUMA_WAIT_FOR_LESS_BUSY_WORKER', 0.001).to_f
+end
 
 # https://github.com/puma/puma/blob/master/5.0-Upgrade.md#nakayoshi_fork
-nakayoshi_fork unless ENV['DISABLE_PUMA_NAKAYOSHI_FORK']
+if defined?(nakayoshi_fork)
+  nakayoshi_fork unless ENV['DISABLE_PUMA_NAKAYOSHI_FORK']
+end
 
 # Use json formatter
 require_relative "/home/git/gitlab/lib/gitlab/puma_logging/json_formatter"

config/puma.rb.example

@@ -70,10 +70,14 @@ tag 'gitlab-puma-worker'
 worker_timeout 60
 
 # https://github.com/puma/puma/blob/master/5.0-Upgrade.md#lower-latency-better-throughput
-wait_for_less_busy_worker ENV.fetch('PUMA_WAIT_FOR_LESS_BUSY_WORKER', 0.001).to_f
+if defined?(wait_for_less_busy_worker)
+  wait_for_less_busy_worker ENV.fetch('PUMA_WAIT_FOR_LESS_BUSY_WORKER', 0.001).to_f
+end
 
 # https://github.com/puma/puma/blob/master/5.0-Upgrade.md#nakayoshi_fork
-nakayoshi_fork unless ENV['DISABLE_PUMA_NAKAYOSHI_FORK']
+if defined?(nakayoshi_fork)
+  nakayoshi_fork unless ENV['DISABLE_PUMA_NAKAYOSHI_FORK']
+end
 
 # Use json formatter
 require_relative "/home/git/gitlab/lib/gitlab/puma_logging/json_formatter"

config/puma_actioncable.example.development.rb

@@ -80,10 +80,14 @@ tag 'gitlab-actioncable-puma-worker'
 worker_timeout 60
 
 # https://github.com/puma/puma/blob/master/5.0-Upgrade.md#lower-latency-better-throughput
-wait_for_less_busy_worker ENV.fetch('PUMA_WAIT_FOR_LESS_BUSY_WORKER', 0.001).to_f
+if defined?(wait_for_less_busy_worker)
+  wait_for_less_busy_worker ENV.fetch('PUMA_WAIT_FOR_LESS_BUSY_WORKER', 0.001).to_f
+end
 
 # https://github.com/puma/puma/blob/master/5.0-Upgrade.md#nakayoshi_fork
-nakayoshi_fork unless ENV['DISABLE_PUMA_NAKAYOSHI_FORK']
+if defined?(nakayoshi_fork)
+  nakayoshi_fork unless ENV['DISABLE_PUMA_NAKAYOSHI_FORK']
+end
 
 # Use json formatter
 require_relative "/home/git/gitlab/lib/gitlab/puma_logging/json_formatter"