From: "Zhang, Yanmin" <yanmin_zhang@linux.intel.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: clameter@sgi.com, linux-kernel@vger.kernel.org,
penberg@cs.helsinki.fi, mel@csn.ul.ie, mpm@selenic.com,
linux-mm@kvack.org
Subject: [PATCH] Add definitions of USHORT_MAX and others
Date: Mon, 24 Mar 2008 09:22:30 +0800 [thread overview]
Message-ID: <1206321750.14496.126.camel@ymzhang> (raw)
In-Reply-To: <20080321152407.b0fbe81f.akpm@linux-foundation.org>
Below is the new patch. Thanks for the comments.
---
Add definitions of USHORT_MAX and others into kernel. ipc uses it and
slub implementation might also use it.
The patch is against 2.6.25-rc6.
Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com>
Reviewed-by: Christoph Lameter <clameter@sgi.com>
---
diff -Nraup linux-2.6.25-rc6/include/linux/kernel.h linux-2.6.25-rc6_maxshort/include/linux/kernel.h
--- linux-2.6.25-rc6/include/linux/kernel.h 2008-03-24 02:05:25.000000000 +0800
+++ linux-2.6.25-rc6_maxshort/include/linux/kernel.h 2008-03-24 02:07:27.000000000 +0800
@@ -20,6 +20,9 @@
extern const char linux_banner[];
extern const char linux_proc_banner[];
+#define USHORT_MAX ((u16)(~0U))
+#define SHORT_MAX ((s16)(USHORT_MAX>>1))
+#define SHORT_MIN (-SHORT_MAX - 1)
#define INT_MAX ((int)(~0U>>1))
#define INT_MIN (-INT_MAX - 1)
#define UINT_MAX (~0U)
diff -Nraup linux-2.6.25-rc6/ipc/msg.c linux-2.6.25-rc6_maxshort/ipc/msg.c
--- linux-2.6.25-rc6/ipc/msg.c 2008-03-24 02:05:25.000000000 +0800
+++ linux-2.6.25-rc6_maxshort/ipc/msg.c 2008-03-24 02:07:27.000000000 +0800
@@ -324,19 +324,19 @@ copy_msqid_to_user(void __user *buf, str
out.msg_rtime = in->msg_rtime;
out.msg_ctime = in->msg_ctime;
- if (in->msg_cbytes > USHRT_MAX)
- out.msg_cbytes = USHRT_MAX;
+ if (in->msg_cbytes > USHORT_MAX)
+ out.msg_cbytes = USHORT_MAX;
else
out.msg_cbytes = in->msg_cbytes;
out.msg_lcbytes = in->msg_cbytes;
- if (in->msg_qnum > USHRT_MAX)
- out.msg_qnum = USHRT_MAX;
+ if (in->msg_qnum > USHORT_MAX)
+ out.msg_qnum = USHORT_MAX;
else
out.msg_qnum = in->msg_qnum;
- if (in->msg_qbytes > USHRT_MAX)
- out.msg_qbytes = USHRT_MAX;
+ if (in->msg_qbytes > USHORT_MAX)
+ out.msg_qbytes = USHORT_MAX;
else
out.msg_qbytes = in->msg_qbytes;
out.msg_lqbytes = in->msg_qbytes;
diff -Nraup linux-2.6.25-rc6/ipc/util.c linux-2.6.25-rc6_maxshort/ipc/util.c
--- linux-2.6.25-rc6/ipc/util.c 2008-03-24 02:05:25.000000000 +0800
+++ linux-2.6.25-rc6_maxshort/ipc/util.c 2008-03-24 02:07:27.000000000 +0800
@@ -84,8 +84,8 @@ void ipc_init_ids(struct ipc_ids *ids)
ids->seq = 0;
{
int seq_limit = INT_MAX/SEQ_MULTIPLIER;
- if(seq_limit > USHRT_MAX)
- ids->seq_max = USHRT_MAX;
+ if(seq_limit > USHORT_MAX)
+ ids->seq_max = USHORT_MAX;
else
ids->seq_max = seq_limit;
}
diff -Nraup linux-2.6.25-rc6/ipc/util.h linux-2.6.25-rc6_maxshort/ipc/util.h
--- linux-2.6.25-rc6/ipc/util.h 2008-03-24 02:05:25.000000000 +0800
+++ linux-2.6.25-rc6_maxshort/ipc/util.h 2008-03-24 02:07:27.000000000 +0800
@@ -12,7 +12,6 @@
#include <linux/err.h>
-#define USHRT_MAX 0xffff
#define SEQ_MULTIPLIER (IPCMNI)
void sem_init (void);
--
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next prev parent reply other threads:[~2008-03-24 1:22 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20080317230516.078358225@sgi.com>
[not found] ` <20080317230528.279983034@sgi.com>
2008-03-19 9:09 ` [patch 2/9] Store max number of objects in the page struct Zhang, Yanmin
2008-03-19 17:49 ` Christoph Lameter
2008-03-20 3:32 ` Zhang, Yanmin
2008-03-20 21:05 ` Christoph Lameter
2008-03-21 22:24 ` Andrew Morton
2008-03-22 3:27 ` Ben Pfaff
2008-03-24 1:22 ` Zhang, Yanmin [this message]
[not found] ` <20080317230528.939792410@sgi.com>
2008-03-20 5:10 ` [patch 5/9] slub: Fallback to minimal order during slab page allocation Zhang, Yanmin
2008-03-20 18:29 ` Christoph Lameter
2008-03-21 0:52 ` Zhang, Yanmin
2008-03-21 3:35 ` Christoph Lameter
2008-03-21 5:14 ` Zhang, Yanmin
2008-03-21 6:07 ` Christoph Lameter
2008-03-21 8:23 ` Zhang, Yanmin
[not found] ` <20080317230529.701336582@sgi.com>
2008-03-20 5:53 ` [patch 8/9] slub: Make the order configurable for each slab cache Zhang, Yanmin
2008-03-20 18:31 ` Christoph Lameter
2008-03-20 23:57 ` Christoph Lameter
[not found] ` <20080317230529.474353536@sgi.com>
2008-03-18 18:54 ` [patch 7/9] slub: Adjust order boundaries and minimum objects per slab Pekka Enberg
2008-03-18 19:00 ` Christoph Lameter
2008-03-19 1:04 ` Zhang, Yanmin
2008-03-19 15:20 ` Pekka Enberg
2008-03-20 6:44 ` Zhang, Yanmin
2008-03-20 18:32 ` Christoph Lameter
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