From: Benjamin LaHaise <bcrl@kvack.org>
Date: Wed, 22 Jun 2005 00:14:54 +0000 (-0700)
Subject: [PATCH] __mod_page_state(): pass unsigned long instead of unsigned
X-Git-Tag: v2.6.13-rc1~68^2~582^2~147
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=83e5d8f7253cb7b14472385a6d57df1e9f848e8e;p=linux-2.6

[PATCH] __mod_page_state(): pass unsigned long instead of unsigned

By making the offset argument of __mod_page_state an unsigned long instead
of unsigned, we can avoid forcing the compiler to sign extend a usually
constant argument.  This saves 1 instruction on x86-64.

Signed-off-by: Benjamin LaHaise <benjamin.c.lahaise@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index df313891db..f2ee9b2332 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -136,7 +136,7 @@ struct page_state {
 extern void get_page_state(struct page_state *ret);
 extern void get_full_page_state(struct page_state *ret);
 extern unsigned long __read_page_state(unsigned offset);
-extern void __mod_page_state(unsigned offset, unsigned long delta);
+extern void __mod_page_state(unsigned long offset, unsigned long delta);
 
 #define read_page_state(member) \
 	__read_page_state(offsetof(struct page_state, member))
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 70f710286c..c976628f9d 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1158,7 +1158,7 @@ unsigned long __read_page_state(unsigned offset)
 	return ret;
 }
 
-void __mod_page_state(unsigned offset, unsigned long delta)
+void __mod_page_state(unsigned long offset, unsigned long delta)
 {
 	unsigned long flags;
 	void* ptr;