Subject: + mm-constify-nmask-argument-to-set_mempolicy.patch added to -mm tree
To: linux@xxxxxxxxxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Wed, 30 Apr 2014 13:04:09 -0700
The patch titled
Subject: mm: constify nmask argument to set_mempolicy()
has been added to the -mm tree. Its filename is
mm-constify-nmask-argument-to-set_mempolicy.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-constify-nmask-argument-to-set_mempolicy.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-constify-nmask-argument-to-set_mempolicy.patch
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------------------------------------------------------
From: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
Subject: mm: constify nmask argument to set_mempolicy()
The nmask argument to set_mempolicy() is const according to the user-space
header numaif.h, and since the kernel does indeed not modify it, it might
as well be declared const in the kernel.
Signed-off-by: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/syscalls.h | 2 +-
mm/mempolicy.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff -puN include/linux/syscalls.h~mm-constify-nmask-argument-to-set_mempolicy include/linux/syscalls.h
--- a/include/linux/syscalls.h~mm-constify-nmask-argument-to-set_mempolicy
+++ a/include/linux/syscalls.h
@@ -711,7 +711,7 @@ asmlinkage long sys_keyctl(int cmd, unsi
asmlinkage long sys_ioprio_set(int which, int who, int ioprio);
asmlinkage long sys_ioprio_get(int which, int who);
-asmlinkage long sys_set_mempolicy(int mode, unsigned long __user *nmask,
+asmlinkage long sys_set_mempolicy(int mode, const unsigned long __user *nmask,
unsigned long maxnode);
asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode,
const unsigned long __user *from,
diff -puN mm/mempolicy.c~mm-constify-nmask-argument-to-set_mempolicy mm/mempolicy.c
--- a/mm/mempolicy.c~mm-constify-nmask-argument-to-set_mempolicy
+++ a/mm/mempolicy.c
@@ -1333,7 +1333,7 @@ SYSCALL_DEFINE6(mbind, unsigned long, st
}
/* Set the process memory policy */
-SYSCALL_DEFINE3(set_mempolicy, int, mode, unsigned long __user *, nmask,
+SYSCALL_DEFINE3(set_mempolicy, int, mode, const unsigned long __user *, nmask,
unsigned long, maxnode)
{
int err;
_
Patches currently in -mm which might be from linux@xxxxxxxxxxxxxxxxxx are
mm-constify-nmask-argument-to-mbind.patch
mm-constify-nmask-argument-to-set_mempolicy.patch
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