bump ngx_pagespeed pipe buffers

nps-pipe-buffer-bump.diff

diff --git a/src/ngx_event_connection.cc b/src/ngx_event_connection.cc
index c70f4ad..defaec8 100644
--- a/src/ngx_event_connection.cc
+++ b/src/ngx_event_connection.cc
@@ -52,6 +52,13 @@ bool NgxEventConnection::Init(ngx_cycle_t* cycle) {
   } else {
     pipe_read_fd_ = file_descriptors[0];
     pipe_write_fd_ = file_descriptors[1];
+
+    long old_pipe_size, pipe_size;
+
+    old_pipe_size = (long)fcntl(pipe_write_fd_, F_GETPIPE_SZ);
+    pipe_size = fcntl(pipe_write_fd_, F_SETPIPE_SZ, 200*1024);
+    ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
+                 "pagespeed: bumped write pipe side: %l -> %l", old_pipe_size, pipe_size);
     return true;
   }
   close(file_descriptors[0]);