patch-2.1.106 linux/mm/filemap.c

• Lines: 16
• Date: Tue Jun 9 10:34:03 1998
• Orig file: v2.1.105/linux/mm/filemap.c
• Orig date: Thu Mar 26 15:57:06 1998

diff -u --recursive --new-file v2.1.105/linux/mm/filemap.c linux/mm/filemap.c
@@ -1256,6 +1256,7 @@
 	struct vm_area_struct * vma;
 	int unmapped_error, error = -EINVAL;
 
+	down(&current->mm->mmap_sem);
 	lock_kernel();
 	if (start & ~PAGE_MASK)
 		goto out;
@@ -1303,6 +1304,7 @@
 	}
 out:
 	unlock_kernel();
+	up(&current->mm->mmap_sem);
 	return error;
 }