Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...

[pandora-kernel.git] / fs / xfs / linux-2.6 / xfs_file.c

diff --git a/fs/xfs/linux-2.6/xfs_file.c b/fs/xfs/linux-2.6/xfs_file.c
index 92b2f22..0d4001e 100644 (file)
--- a/fs/xfs/linux-2.6/xfs_file.c
+++ b/fs/xfs/linux-2.6/xfs_file.c
@@ -212,19 +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 */
 
@@ -310,7 +309,7 @@ xfs_file_mmap(
        struct vm_area_struct *vma)
 {
        vma->vm_ops = &xfs_file_vm_ops;
-       vma->vm_flags |= VM_CAN_INVALIDATE;
+       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)
@@ -414,6 +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,
@@ -465,14 +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