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authorRasmus Villemoes <linux@rasmusvillemoes.dk>2014-06-04 16:07:58 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-04 16:54:03 -0700
commit23c8902d403ef9a04cdc367d0b76a3ed6d83f5c5 (patch)
tree060556fb56a1357f2d0a9cc017c6d15327488545
parentf7f28ca98b9a7a99fc55df2dddcf49857ab004f0 (diff)
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>
-rw-r--r--include/linux/syscalls.h2
-rw-r--r--mm/mempolicy.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index bfef0be279dd..b0881a0ed322 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -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_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 --git a/mm/mempolicy.c b/mm/mempolicy.c
index 727187f1155b..b09586d8316b 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -1383,7 +1383,7 @@ SYSCALL_DEFINE6(mbind, unsigned long, start, unsigned long, len,
}
/* 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;