[PATCH 01/10] Make exec_mmap extern

[ntl@pobox.com]

From: Nathan Lynch <ntl@pobox.com>

Restoration of process state from a checkpoint image is similar to
exec in that the calling task's mm is replaced.  Make exec_mmap
available for this purpose.

Signed-off-by: Oren Laadan <orenl@cs.columbia.edu>
[ntl: extracted from Oren's "c/r: dump memory address space (private memory)"]
Signed-off-by: Nathan Lynch <ntl@pobox.com>
---
 fs/exec.c          |    2 +-
 include/linux/mm.h |    3 +++
 2 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/fs/exec.c b/fs/exec.c
index c62efcb..9d8c27a 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -767,7 +767,7 @@ int kernel_read(struct file *file, loff_t offset,
 
 EXPORT_SYMBOL(kernel_read);
 
-static int exec_mmap(struct mm_struct *mm)
+int exec_mmap(struct mm_struct *mm)
 {
 	struct task_struct *tsk;
 	struct mm_struct * old_mm, *active_mm;
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 721f451..5397237 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1321,6 +1321,9 @@ extern int do_munmap(struct mm_struct *, unsigned long, size_t);
 
 extern unsigned long do_brk(unsigned long, unsigned long);
 
+/* fs/exec.c */
+extern int exec_mmap(struct mm_struct *mm);
+
 /* filemap.c */
 extern unsigned long page_unuse(struct page *);
 extern void truncate_inode_pages(struct address_space *, loff_t);
-- 
1.7.4