1 files changed, 6 insertions, 0 deletions
diff --git a/src/os/unix/ngx_posix_init.c b/src/os/unix/ngx_posix_init.c
index 4844ae52f..39e1b584a 100644
--- a/src/os/unix/ngx_posix_init.c
+++ b/src/os/unix/ngx_posix_init.c
@@ -30,6 +30,8 @@ ngx_os_io_t ngx_os_io = {
 ngx_int_t
 ngx_os_init(ngx_log_t *log)
 {
+    ngx_uint_t  n;
+
 #if (NGX_HAVE_OS_SPECIFIC_INIT)
     if (ngx_os_specific_init(log) != NGX_OK) {
         return NGX_ERROR;
@@ -41,6 +43,10 @@ ngx_os_init(ngx_log_t *log)
     ngx_pagesize = getpagesize();
     ngx_cacheline_size = NGX_CPU_CACHE_LINE;
 
+    n = ngx_pagesize;
+
+    for (n = ngx_pagesize; n >>= 1; ngx_pagesize_shift++) { /* void */ }
+
     if (ngx_ncpu == 0) {
         ngx_ncpu = 1;
     }