Merge branches 'tracing/ftrace', 'tracing/ring-buffer' and 'tracing/urgent' into...

[safe/jmp/linux-2.6] / kernel / fork.c

diff --git a/kernel/fork.c b/kernel/fork.c
index 7407ab3..7b93da7 100644 (file)
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -319,17 +319,20 @@ static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm)
                file = tmp->vm_file;
                if (file) {
                        struct inode *inode = file->f_path.dentry->d_inode;
+                       struct address_space *mapping = file->f_mapping;
+
                        get_file(file);
                        if (tmp->vm_flags & VM_DENYWRITE)
                                atomic_dec(&inode->i_writecount);
-
-                       /* insert tmp into the share list, just after mpnt */
-                       spin_lock(&file->f_mapping->i_mmap_lock);
+                       spin_lock(&mapping->i_mmap_lock);
+                       if (tmp->vm_flags & VM_SHARED)
+                               mapping->i_mmap_writable++;
                        tmp->vm_truncate_count = mpnt->vm_truncate_count;
-                       flush_dcache_mmap_lock(file->f_mapping);
+                       flush_dcache_mmap_lock(mapping);
+                       /* insert tmp into the share list, just after mpnt */
                        vma_prio_tree_add(tmp, mpnt);
-                       flush_dcache_mmap_unlock(file->f_mapping);
-                       spin_unlock(&file->f_mapping->i_mmap_lock);
+                       flush_dcache_mmap_unlock(mapping);
+                       spin_unlock(&mapping->i_mmap_lock);
                }
 
                /*
@@ -1406,6 +1409,7 @@ long do_fork(unsigned long clone_flags,
                        init_completion(&vfork);
                }
 
+               audit_finish_fork(p);
                tracehook_report_clone(trace, regs, clone_flags, nr, p);
 
                /*