| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <000101c7182d$3a0b6a10$ba88030a@amr.corp.intel.com>
Date: Mon, 4 Dec 2006 21:21:31 -0800
From: "Chen, Kenneth W" <kenneth.w.chen@...el.com>
To: "'Andrew Morton'" <akpm@...l.org>
Cc: "linux-kernel" <linux-kernel@...r.kernel.org>
Subject: [patch] add an iterator index in struct pagevec
pagevec is never expected to be more than PAGEVEC_SIZE, I think a
unsigned char is enough to count them. This patch makes nr, cold
to be unsigned char and also adds an iterator index. With that,
the size can be even bumped up by 1 to 15.
Signed-off-by: Ken Chen <kenneth.w.chen@...el.com>
diff -Nurp linux-2.6.19/include/linux/pagevec.h linux-2.6.19.ken/include/linux/pagevec.h
--- linux-2.6.19/include/linux/pagevec.h 2006-11-29 13:57:37.000000000 -0800
+++ linux-2.6.19.ken/include/linux/pagevec.h 2006-12-04 19:18:21.000000000 -0800
@@ -8,15 +8,16 @@
#ifndef _LINUX_PAGEVEC_H
#define _LINUX_PAGEVEC_H
-/* 14 pointers + two long's align the pagevec structure to a power of two */
-#define PAGEVEC_SIZE 14
+/* 15 pointers + 3 char's align the pagevec structure to a power of two */
+#define PAGEVEC_SIZE 15
struct page;
struct address_space;
struct pagevec {
- unsigned long nr;
- unsigned long cold;
+ unsigned char nr;
+ unsigned char cold;
+ unsigned char idx;
struct page *pages[PAGEVEC_SIZE];
};
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists