linux-kernel - [PATCH] Re-organization of PIDMAP

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Message-Id: <1200307835.2819.18.camel@life.india.kernelcorp.com>
Date:	Mon, 14 Jan 2008 16:20:35 +0530
From:	Ratnadeep Joshi <ratn.josh@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	trivial@...nel.org, akpm@...ux-foundation.org
Subject: [PATCH] Re-organization of PIDMAP_ENTRIES macro expansion

This patch tries to re-organize the macro expansion of PIDMAP_ENTRIES
(possibly) to a more clear one.

Thanks,
- Ratnadeep Joshi

diff --git a/include/linux/pid_namespace.h
b/include/linux/pid_namespace.h
index 1689e28..06e3e99 100644
--- a/include/linux/pid_namespace.h
+++ b/include/linux/pid_namespace.h
@@ -12,7 +12,7 @@ struct pidmap {
        void *page;
 };
 
-#define PIDMAP_ENTRIES         ((PID_MAX_LIMIT + 8*PAGE_SIZE -
1)/PAGE_SIZE/8)
+#define PIDMAP_ENTRIES         ((PID_MAX_LIMIT - 1)/PAGE_SIZE/8 + 1)
 
 struct pid_namespace {
 	struct kref kref;


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