nginx 0.3.27 *) Change: the "variables_hash_max_size" and "variables_hash_bucket_size" directives. *) Feature: the $body_bytes_sent variable can be used not only in the "log_format" directive. *) Feature: the $ssl_protocol and $ssl_cipher variables. *) Feature: the cache line size detection for widespread CPUs at start time. *) Feature: now the "accept_mutex" directive is supported using fcntl(2) on platforms different from i386, amd64, sparc64, and ppc. *) Feature: the "lock_file" directive and the --with-lock-path=PATH autoconfiguration directive. *) Bugfix: if the HTTPS protocol was used in the "proxy_pass" directive then the requests with the body was not transferred.

--- a/src/event/ngx_event.h
+++ b/src/event/ngx_event.h
@@ -438,7 +438,8 @@ typedef struct {
 extern ngx_atomic_t          *ngx_connection_counter;
 
 extern ngx_atomic_t          *ngx_accept_mutex_ptr;
-extern ngx_atomic_t          *ngx_accept_mutex;
+extern ngx_shmtx_t            ngx_accept_mutex;
+extern ngx_uint_t             ngx_use_accept_mutex;
 extern ngx_uint_t             ngx_accept_mutex_held;
 extern ngx_msec_t             ngx_accept_mutex_delay;
 extern ngx_int_t              ngx_accept_disabled;