make do_mremap() static

The extern in sys_sparc_64.c was a rudiment of time when do_mremap()
used to exist in MMU case (it doesn't anymore).  As for !MMU one,
nothing uses it outside of mm/nommu.c...

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

3 files changed, 1 insertions, 9 deletions

diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c
index 708bc29d36a8..42beb6fc4ad8 100644
--- a/arch/sparc/kernel/sys_sparc_64.c
+++ b/arch/sparc/kernel/sys_sparc_64.c
@@ -470,10 +470,6 @@ SYSCALL_DEFINE2(64_munmap, unsigned long, addr, size_t, len)
 
         return vm_munmap(addr, len);
 }
-
-extern unsigned long do_mremap(unsigned long addr,
-        unsigned long old_len, unsigned long new_len,
-        unsigned long flags, unsigned long new_addr);
                 
 SYSCALL_DEFINE5(64_mremap, unsigned long, addr, unsigned long, old_len,
                 unsigned long, new_len, unsigned long, flags,
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 7acc9dc73c9f..f4c8aa990442 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1079,9 +1079,6 @@ extern unsigned long move_page_tables(struct vm_area_struct *vma,
                 unsigned long old_addr, struct vm_area_struct *new_vma,
                 unsigned long new_addr, unsigned long len,
                 bool need_rmap_locks);
-extern unsigned long do_mremap(unsigned long addr,
-                               unsigned long old_len, unsigned long new_len,
-                               unsigned long flags, unsigned long new_addr);
 extern unsigned long change_protection(struct vm_area_struct *vma, unsigned long start,
                               unsigned long end, pgprot_t newprot,
                               int dirty_accountable, int prot_numa);
diff --git a/mm/nommu.c b/mm/nommu.c
index e19328087534..66737e0584ae 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -1770,7 +1770,7 @@ unsigned long vm_brk(unsigned long addr, unsigned long len)
  *
  * MREMAP_FIXED is not supported under NOMMU conditions
  */
-unsigned long do_mremap(unsigned long addr,
+static unsigned long do_mremap(unsigned long addr,
                         unsigned long old_len, unsigned long new_len,
                         unsigned long flags, unsigned long new_addr)
 {
@@ -1805,7 +1805,6 @@ unsigned long do_mremap(unsigned long addr,
         vma->vm_end = vma->vm_start + new_len;
         return vma->vm_start;
 }
-EXPORT_SYMBOL(do_mremap);
 
 SYSCALL_DEFINE5(mremap, unsigned long, addr, unsigned long, old_len,
                 unsigned long, new_len, unsigned long, flags,