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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@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Rasmus Villemoes 2014-06-04 16:07:58 -07:00 committed by Linus Torvalds
parent f7f28ca98b
commit 23c8902d40
2 changed files with 2 additions and 2 deletions
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2
include/linux/syscalls.h
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@ -711,7 +711,7 @@ asmlinkage long sys_keyctl(int cmd, unsigned long arg2, unsigned long arg3,
asmlinkage long sys_ioprio_set(int which, int who, int ioprio); asmlinkage long sys_ioprio_set(int which, int who, int ioprio);
asmlinkage long sys_ioprio_get(int which, int who); 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); unsigned long maxnode);
asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode, asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode,
const unsigned long __user *from, const unsigned long __user *from,

2
mm/mempolicy.c
View File

@ -1383,7 +1383,7 @@ SYSCALL_DEFINE6(mbind, unsigned long, start, unsigned long, len,
} }
/* Set the process memory policy */ /* 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) unsigned long, maxnode)
{ {
int err; int err;