ia64, sparc64: convert wrappers around do_mremap() to sys_mremap()

they contain open-coded sys_mremap()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 3 insertions, 16 deletions

diff --git a/arch/ia64/kernel/sys_ia64.c b/arch/ia64/kernel/sys_ia64.c
index 609d50056a6..d9439ef2f66 100644
--- a/arch/ia64/kernel/sys_ia64.c
+++ b/arch/ia64/kernel/sys_ia64.c
@@ -171,22 +171,9 @@ asmlinkage unsigned long
 ia64_mremap (unsigned long addr, unsigned long old_len, unsigned long new_len, unsigned long flags,
              unsigned long new_addr)
 {
-        extern unsigned long do_mremap (unsigned long addr,
-                                        unsigned long old_len,
-                                        unsigned long new_len,
-                                        unsigned long flags,
-                                        unsigned long new_addr);
-
-        down_write(&current->mm->mmap_sem);
-        {
-                addr = do_mremap(addr, old_len, new_len, flags, new_addr);
-        }
-        up_write(&current->mm->mmap_sem);
-
-        if (IS_ERR((void *) addr))
-                return addr;
-
-        force_successful_syscall_return();
+        addr = sys_mremap(addr, old_len, new_len, flags, new_addr);
+        if (!IS_ERR((void *) addr))
+                force_successful_syscall_return();
         return addr;
 }