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 f12e80a..0d4001e 100644 (file)
--- a/fs/xfs/linux-2.6/xfs_file.c
+++ b/fs/xfs/linux-2.6/xfs_file.c
@@ -212,20 +212,18 @@ xfs_file_fsync(
 }
 
 #ifdef CONFIG_XFS_DMAPI
-STATIC struct page *
+STATIC int
 xfs_vm_fault(
        struct vm_area_struct   *vma,
-       struct fault_data       *fdata)
+       struct vm_fault *vmf)
 {
        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), vma, 0)) {
-               fdata->type = VM_FAULT_SIGBUS;
-               return NULL;
-       }
-       return filemap_fault(vma, fdata);
+       if (XFS_SEND_MMAP(XFS_VFSTOM(vp->v_vfsp), vma, 0))
+               return VM_FAULT_SIGBUS;
+       return filemap_fault(vma, vmf);
 }
 #endif /* CONFIG_XFS_DMAPI */
 
@@ -311,7 +309,7 @@ xfs_file_mmap(
        struct vm_area_struct *vma)
 {
        vma->vm_ops = &xfs_file_vm_ops;
-       vma->vm_flags |= VM_CAN_INVALIDATE | VM_CAN_NONLINEAR;
+       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)
@@ -415,6 +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,
@@ -467,11 +479,13 @@ const struct file_operations xfs_dir_file_operations = {
 
 static struct vm_operations_struct xfs_file_vm_ops = {
        .fault          = filemap_fault,
+       .page_mkwrite   = xfs_vm_page_mkwrite,
 };
 
 #ifdef CONFIG_XFS_DMAPI
 static struct vm_operations_struct xfs_dmapi_file_vm_ops = {
        .fault          = xfs_vm_fault,
+       .page_mkwrite   = xfs_vm_page_mkwrite,
 #ifdef HAVE_VMOP_MPROTECT
        .mprotect       = xfs_vm_mprotect,
 #endif