bugfix: applied the cache_lock_hang_in_subreq patch to the nginx core to fix the request hang when using proxy_cache_lock in subrequests and the cache lock timeout happens.

patches/nginx-1.4.3-cache_lock_hang_in_subreq.patch

@@ -0,0 +1,22 @@
+--- nginx-1.4.3/src/http/ngx_http_file_cache.c	2013-10-08 05:07:14.000000000 -0700
++++ nginx-1.4.3-patched/src/http/ngx_http_file_cache.c	2013-10-26 14:47:56.184041728 -0700
+@@ -432,6 +432,7 @@ ngx_http_file_cache_lock_wait_handler(ng
+     ngx_uint_t                 wait;
+     ngx_msec_t                 timer;
+     ngx_http_cache_t          *c;
++    ngx_connection_t          *conn;
+     ngx_http_request_t        *r;
+     ngx_http_file_cache_t     *cache;
+ 
+@@ -471,7 +472,10 @@ wakeup:
+ 
+     c->waiting = 0;
+     r->main->blocked--;
+-    r->connection->write->handler(r->connection->write);
++
++    conn = r->connection;
++    r->write_event_handler(r);
++    ngx_http_run_posted_requests(conn);
+ }
+ 
+ 

util/mirror-tarballs

@@ -175,22 +175,26 @@ fi
 
 answer=`$root/util/ver-ge "$main_ver" 1.5.3`
 if [ "$answer" = "N" ]; then
-    echo "$info_txt applying the unix_socket_accept_over_read patch for lua $ver"
+    echo "$info_txt applying the unix_socket_accept_over_read patch for nginx $ver"
     patch -p1 < $root/patches/nginx-$ver-unix_socket_accept_over_read.patch || exit 1
     echo
 fi
 
 answer=`$root/util/ver-ge "$main_ver" 1.5.3`
 if [ "$answer" = "N" ]; then
-    echo "$info_txt applying the gzip_buffered_bug patch for lua $ver"
+    echo "$info_txt applying the gzip_buffered_bug patch for nginx $ver"
     patch -p1 < $root/patches/nginx-$ver-gzip_buffered_bug.patch || exit 1
     echo
 fi
 
-echo "$info_txt applying the gzip_flush_bug patch for lua $ver"
+echo "$info_txt applying the gzip_flush_bug patch for nginx $ver"
 patch -p1 < $root/patches/nginx-$ver-gzip_flush_bug.patch || exit 1
 echo
 
+echo "$info_txt applying the cache_lock_hang_in_subreq patch for nginx $ver"
+patch -p1 < $root/patches/nginx-$ver-cache_lock_hang_in_subreq.patch || exit 1
+echo
+
 rm -f *.patch || exit 1
 
 cd .. || exit 1