* [PATCH 1/1] pid_namespace.c/.h: Simplifying defines.
@ 2013-03-06 19:38 Raphael S.Carvalho
0 siblings, 0 replies; only message in thread
From: Raphael S.Carvalho @ 2013-03-06 19:38 UTC (permalink / raw)
To: Eric W. Biederman, Serge Hallyn, Andrew Morton, Oleg Nesterov,
Cyrill Gorcunov
Cc: linux-kernel, Raphael S.Carvalho
This patch removes BITS_PER_PAGE from pid_namespace.c and put
it into pid_namespace.h instead, since we can simplify the
define PID_MAP_ENTRIES by using the BITS_PER_PAGE.
Signed-off-by: Raphael S.Carvalho <raphael.scarv@gmail.com>
---
include/linux/pid_namespace.h | 3 ++-
kernel/pid_namespace.c | 2 --
2 files changed, 2 insertions(+), 3 deletions(-)
diff --git a/include/linux/pid_namespace.h b/include/linux/pid_namespace.h
index 215e5e3..e4ae945 100644
--- a/include/linux/pid_namespace.h
+++ b/include/linux/pid_namespace.h
@@ -13,7 +13,8 @@ struct pidmap {
void *page;
};
-#define PIDMAP_ENTRIES ((PID_MAX_LIMIT + 8*PAGE_SIZE - 1)/PAGE_SIZE/8)
+#define BITS_PER_PAGE (PAGE_SIZE * 8)
+#define PIDMAP_ENTRIES ((PID_MAX_LIMIT+BITS_PER_PAGE-1)/BITS_PER_PAGE)
struct bsd_acct_struct;
diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c
index c1c3dc1..f158e27 100644
--- a/kernel/pid_namespace.c
+++ b/kernel/pid_namespace.c
@@ -19,8 +19,6 @@
#include <linux/reboot.h>
#include <linux/export.h>
-#define BITS_PER_PAGE (PAGE_SIZE*8)
-
struct pid_cache {
int nr_ids;
char name[16];
--
1.7.2.5
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