From: Nathan Lynch <ntl@xxxxxxxxx>
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@xxxxxxxxxxxxxxx>
[ntl: extracted from Oren's "c/r: dump memory address space (private memory)"]
Signed-off-by: Nathan Lynch <ntl@xxxxxxxxx>
---
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
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