Merge with Linux 2.3.23. The new bootmem stuff has broken various

platforms.  At this time I've only verified that IP22 support compiles
and IP27 actually works.

1 files changed, 19 insertions, 6 deletions

diff --git a/mm/mlock.c b/mm/mlock.c
index be5e07cbf..9709d1a04 100644
--- a/mm/mlock.c
+++ b/mm/mlock.c
@@ -13,7 +13,9 @@
 
 static inline int mlock_fixup_all(struct vm_area_struct * vma, int newflags)
 {
+	vmlist_modify_lock(vma->vm_mm);
 	vma->vm_flags = newflags;
+	vmlist_modify_unlock(vma->vm_mm);
 	return 0;
 }
 
@@ -26,15 +28,17 @@ static inline int mlock_fixup_start(struct vm_area_struct * vma,
 	if (!n)
 		return -EAGAIN;
 	*n = *vma;
-	vma->vm_start = end;
 	n->vm_end = end;
-	vma->vm_offset += vma->vm_start - n->vm_start;
 	n->vm_flags = newflags;
 	if (n->vm_file)
 		get_file(n->vm_file);
 	if (n->vm_ops && n->vm_ops->open)
 		n->vm_ops->open(n);
+	vmlist_modify_lock(vma->vm_mm);
+	vma->vm_offset += end - vma->vm_start;
+	vma->vm_start = end;
 	insert_vm_struct(current->mm, n);
+	vmlist_modify_unlock(vma->vm_mm);
 	return 0;
 }
 
@@ -47,7 +51,6 @@ static inline int mlock_fixup_end(struct vm_area_struct * vma,
 	if (!n)
 		return -EAGAIN;
 	*n = *vma;
-	vma->vm_end = start;
 	n->vm_start = start;
 	n->vm_offset += n->vm_start - vma->vm_start;
 	n->vm_flags = newflags;
@@ -55,7 +58,10 @@ static inline int mlock_fixup_end(struct vm_area_struct * vma,
 		get_file(n->vm_file);
 	if (n->vm_ops && n->vm_ops->open)
 		n->vm_ops->open(n);
+	vmlist_modify_lock(vma->vm_mm);
+	vma->vm_end = start;
 	insert_vm_struct(current->mm, n);
+	vmlist_modify_unlock(vma->vm_mm);
 	return 0;
 }
 
@@ -75,10 +81,7 @@ static inline int mlock_fixup_middle(struct vm_area_struct * vma,
 	*left = *vma;
 	*right = *vma;
 	left->vm_end = start;
-	vma->vm_start = start;
-	vma->vm_end = end;
 	right->vm_start = end;
-	vma->vm_offset += vma->vm_start - left->vm_start;
 	right->vm_offset += right->vm_start - left->vm_start;
 	vma->vm_flags = newflags;
 	if (vma->vm_file)
@@ -88,8 +91,14 @@ static inline int mlock_fixup_middle(struct vm_area_struct * vma,
 		vma->vm_ops->open(left);
 		vma->vm_ops->open(right);
 	}
+	vmlist_modify_lock(vma->vm_mm);
+	vma->vm_offset += start - vma->vm_start;
+	vma->vm_start = start;
+	vma->vm_end = end;
+	vma->vm_flags = newflags;
 	insert_vm_struct(current->mm, left);
 	insert_vm_struct(current->mm, right);
+	vmlist_modify_unlock(vma->vm_mm);
 	return 0;
 }
 
@@ -168,7 +177,9 @@ static int do_mlock(unsigned long start, size_t len, int on)
 			break;
 		}
 	}
+	vmlist_modify_lock(current->mm);
 	merge_segments(current->mm, start, end);
+	vmlist_modify_unlock(current->mm);
 	return error;
 }
 
@@ -240,7 +251,9 @@ static int do_mlockall(int flags)
 		if (error)
 			break;
 	}
+	vmlist_modify_lock(current->mm);
 	merge_segments(current->mm, 0, TASK_SIZE);
+	vmlist_modify_unlock(current->mm);
 	return error;
 }