From: Ruslan Ermilov <ru@nginx.com>
Date: Wed, 7 Dec 2016 19:25:37 +0000 (+0300)
Subject: Slab: fixed the number of pages calculation.
X-Git-Url: http://www.kaiwu.me/postgresql/commit/static/gitweb.js?a=commitdiff_plain;h=16de9fc3b52e82d1e2be740be4a1ee9adafb6fbf;p=nginx.git

Slab: fixed the number of pages calculation.

When estimating the number of pages, do not count memory for slots.
In some cases this gives one extra usable memory page.
---

diff --git a/src/core/ngx_slab.c b/src/core/ngx_slab.c
index 4357e8dd9..b33f43f8e 100644
--- a/src/core/ngx_slab.c
+++ b/src/core/ngx_slab.c
@@ -120,6 +120,7 @@ ngx_slab_init(ngx_slab_pool_t *pool)
     }
 
     p += n * sizeof(ngx_slab_page_t);
+    size -= n * sizeof(ngx_slab_page_t);
 
     pages = (ngx_uint_t) (size / (ngx_pagesize + sizeof(ngx_slab_page_t)));