mm/vma: move __vm_munmap() to mm/vma.c

This was arbitrarily left in mmap.c it makes no sense being there, move it
to vma.c to render it testable.

Link: https://lkml.kernel.org/r/5e5e81807c54dfbe363edb2d431eb3d7a37fcdba.1733248985.git.lorenzo.stoakes@oracle.com
Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Jann Horn <jannh@google.com>
Cc: Kees Cook <kees@kernel.org>
Cc: Liam R. Howlett <Liam.Howlett@Oracle.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/mm/vma.h b/mm/vma.h
index 6c460a120f82..295d44ea54db 100644
--- a/mm/vma.h
+++ b/mm/vma.h
@@ -478,4 +478,6 @@ int expand_upwards(struct vm_area_struct *vma, unsigned long address);
 
 int expand_downwards(struct vm_area_struct *vma, unsigned long address);
 
+int __vm_munmap(unsigned long start, size_t len, bool unlock);
+
 #endif	/* __MM_VMA_H */