kill mm argument of vm_munmap()

it's always current->mm

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

2 files changed, 6 insertions, 4 deletions

diff --git a/mm/mmap.c b/mm/mmap.c
index b38b47ef1f7..848ef52d960 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -2134,9 +2134,10 @@ int do_munmap(struct mm_struct *mm, unsigned long start, size_t len)
 }
 EXPORT_SYMBOL(do_munmap);
 
-int vm_munmap(struct mm_struct *mm, unsigned long start, size_t len)
+int vm_munmap(unsigned long start, size_t len)
 {
         int ret;
+        struct mm_struct *mm = current->mm;
 
         down_write(&mm->mmap_sem);
         ret = do_munmap(mm, start, len);
@@ -2148,7 +2149,7 @@ EXPORT_SYMBOL(vm_munmap);
 SYSCALL_DEFINE2(munmap, unsigned long, addr, size_t, len)
 {
         profile_munmap(addr);
-        return vm_munmap(current->mm, addr, len);
+        return vm_munmap(addr, len);
 }
 
 static inline void verify_mm_writelocked(struct mm_struct *mm)
diff --git a/mm/nommu.c b/mm/nommu.c
index dd00383be2d..bb8f4f004a8 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -1734,8 +1734,9 @@ erase_whole_vma:
 }
 EXPORT_SYMBOL(do_munmap);
 
-int vm_munmap(struct mm_struct *mm, unsigned long addr, size_t len)
+int vm_munmap(unsigned long addr, size_t len)
 {
+        struct mm_struct *mm = current->mm;
         int ret;
 
         down_write(&mm->mmap_sem);
@@ -1747,7 +1748,7 @@ EXPORT_SYMBOL(vm_munmap);
 
 SYSCALL_DEFINE2(munmap, unsigned long, addr, size_t, len)
 {
-        return vm_munmap(current->mm, addr, len);
+        return vm_munmap(addr, len);
 }
 
 /*