1 files changed, 27 insertions, 24 deletions

diff --git a/fs/xfs/linux-2.6/xfs_file.c b/fs/xfs/linux-2.6/xfs_file.c
index 8c43cd2e237a..0d4001eafd16 100644
--- a/fs/xfs/linux-2.6/xfs_file.c
+++ b/fs/xfs/linux-2.6/xfs_file.c
@@ -184,15 +184,6 @@ xfs_file_open(
 }
 
 STATIC int
-xfs_file_close(
-        struct file     *filp,
-        fl_owner_t      id)
-{
-        return -bhv_vop_close(vn_from_inode(filp->f_path.dentry->d_inode), 0,
-                                file_count(filp) > 1 ? L_FALSE : L_TRUE, NULL);
-}
-
-STATIC int
 xfs_file_release(
         struct inode    *inode,
         struct file     *filp)
@@ -221,19 +212,18 @@ xfs_file_fsync(
 }
 
 #ifdef CONFIG_XFS_DMAPI
-STATIC struct page *
-xfs_vm_nopage(
-        struct vm_area_struct   *area,
-        unsigned long           address,
-        int                     *type)
+STATIC int
+xfs_vm_fault(
+        struct vm_area_struct   *vma,
+        struct vm_fault *vmf)
 {
-        struct inode    *inode = area->vm_file->f_path.dentry->d_inode;
+        struct inode    *inode = vma->vm_file->f_path.dentry->d_inode;
         bhv_vnode_t     *vp = vn_from_inode(inode);
 
         ASSERT_ALWAYS(vp->v_vfsp->vfs_flag & VFS_DMI);
-        if (XFS_SEND_MMAP(XFS_VFSTOM(vp->v_vfsp), area, 0))
-                return NULL;
-        return filemap_nopage(area, address, type);
+        if (XFS_SEND_MMAP(XFS_VFSTOM(vp->v_vfsp), vma, 0))
+                return VM_FAULT_SIGBUS;
+        return filemap_fault(vma, vmf);
 }
 #endif /* CONFIG_XFS_DMAPI */
 
@@ -319,6 +309,7 @@ xfs_file_mmap(
         struct vm_area_struct *vma)
 {
         vma->vm_ops = &xfs_file_vm_ops;
+        vma->vm_flags |= VM_CAN_NONLINEAR;
 
 #ifdef CONFIG_XFS_DMAPI
         if (vn_from_inode(filp->f_path.dentry->d_inode)->v_vfsp->vfs_flag & VFS_DMI)
@@ -422,6 +413,20 @@ xfs_file_open_exec(
 }
 #endif /* HAVE_FOP_OPEN_EXEC */
 
+/*
+ * mmap()d file has taken write protection fault and is being made
+ * writable. We can set the page state up correctly for a writable
+ * page, which means we can do correct delalloc accounting (ENOSPC
+ * checking!) and unwritten extent mapping.
+ */
+STATIC int
+xfs_vm_page_mkwrite(
+        struct vm_area_struct   *vma,
+        struct page             *page)
+{
+        return block_page_mkwrite(vma, page, xfs_get_blocks);
+}
+
 const struct file_operations xfs_file_operations = {
         .llseek         = generic_file_llseek,
         .read           = do_sync_read,
@@ -436,7 +441,6 @@ const struct file_operations xfs_file_operations = {
 #endif
         .mmap           = xfs_file_mmap,
         .open           = xfs_file_open,
-        .flush          = xfs_file_close,
         .release        = xfs_file_release,
         .fsync          = xfs_file_fsync,
 #ifdef HAVE_FOP_OPEN_EXEC
@@ -458,7 +462,6 @@ const struct file_operations xfs_invis_file_operations = {
 #endif
         .mmap           = xfs_file_mmap,
         .open           = xfs_file_open,
-        .flush          = xfs_file_close,
         .release        = xfs_file_release,
         .fsync          = xfs_file_fsync,
 };
@@ -475,14 +478,14 @@ const struct file_operations xfs_dir_file_operations = {
 };
 
 static struct vm_operations_struct xfs_file_vm_ops = {
-        .nopage         = filemap_nopage,
-        .populate       = filemap_populate,
+        .fault          = filemap_fault,
+        .page_mkwrite   = xfs_vm_page_mkwrite,
 };
 
 #ifdef CONFIG_XFS_DMAPI
 static struct vm_operations_struct xfs_dmapi_file_vm_ops = {
-        .nopage         = xfs_vm_nopage,
-        .populate       = filemap_populate,
+        .fault          = xfs_vm_fault,
+        .page_mkwrite   = xfs_vm_page_mkwrite,
 #ifdef HAVE_VMOP_MPROTECT
         .mprotect       = xfs_vm_mprotect,
 #endif