5 files changed, 7 insertions, 0 deletions

diff --git a/fs/gfs2/ops_file.c b/fs/gfs2/ops_file.c
index 1a5e8e893d7..bad0b24cb77 100644
--- a/fs/gfs2/ops_file.c
+++ b/fs/gfs2/ops_file.c
@@ -364,6 +364,8 @@ static int gfs2_mmap(struct file *file, struct vm_area_struct *vma)
         else
                 vma->vm_ops = &gfs2_vm_ops_private;
 
+        vma->vm_flags |= VM_CAN_INVALIDATE;
+
         gfs2_glock_dq_uninit(&i_gh);
 
         return error;
diff --git a/fs/gfs2/ops_vm.c b/fs/gfs2/ops_vm.c
index 404b7cc9f8c..d5a98cbfebd 100644
--- a/fs/gfs2/ops_vm.c
+++ b/fs/gfs2/ops_vm.c
@@ -138,6 +138,8 @@ static struct page *gfs2_sharewrite_nopage(struct vm_area_struct *area,
         if (alloc_required) {
                 error = alloc_page_backing(ip, result);
                 if (error) {
+                        if (area->vm_flags & VM_CAN_INVALIDATE)
+                                unlock_page(result);
                         page_cache_release(result);
                         result = NULL;
                         goto out;
diff --git a/fs/ncpfs/mmap.c b/fs/ncpfs/mmap.c
index 70a69115500..5416673418b 100644
--- a/fs/ncpfs/mmap.c
+++ b/fs/ncpfs/mmap.c
@@ -123,6 +123,7 @@ int ncp_mmap(struct file *file, struct vm_area_struct *vma)
                 return -EFBIG;
 
         vma->vm_ops = &ncp_file_mmap;
+        vma->vm_flags |= VM_CAN_INVALIDATE;
         file_accessed(file);
         return 0;
 }
diff --git a/fs/ocfs2/mmap.c b/fs/ocfs2/mmap.c
index d79aa12137d..904f39ff534 100644
--- a/fs/ocfs2/mmap.c
+++ b/fs/ocfs2/mmap.c
@@ -226,6 +226,7 @@ int ocfs2_mmap(struct file *file, struct vm_area_struct *vma)
         ocfs2_meta_unlock(file->f_dentry->d_inode, lock_level);
 out:
         vma->vm_ops = &ocfs2_file_vm_ops;
+        vma->vm_flags |= VM_CAN_INVALIDATE;
         return 0;
 }
 
diff --git a/fs/xfs/linux-2.6/xfs_file.c b/fs/xfs/linux-2.6/xfs_file.c
index cbcd40c8c2a..92b2f225712 100644
--- a/fs/xfs/linux-2.6/xfs_file.c
+++ b/fs/xfs/linux-2.6/xfs_file.c
@@ -310,6 +310,7 @@ xfs_file_mmap(
         struct vm_area_struct *vma)
 {
         vma->vm_ops = &xfs_file_vm_ops;
+        vma->vm_flags |= VM_CAN_INVALIDATE;
 
 #ifdef CONFIG_XFS_DMAPI
         if (vn_from_inode(filp->f_path.dentry->d_inode)->v_vfsp->vfs_flag & VFS_DMI)