[XFS] Provide a mechiansm for flushing delalloc before quota reporting.

SGI-PV: 942815
SGI-Modid: xfs-linux:xfs-kern:23829a

Signed-off-by: Nathan Scott <nathans@sgi.com>

fs/xfs/linux-2.6/xfs_fs_subr.c

@@ -117,6 +117,8 @@ fs_flush_pages(
 
 	if (VN_CACHED(vp)) {
 		filemap_fdatawrite(ip->i_mapping);
+		if (flags & XFS_B_ASYNC)
+			return 0;
 		filemap_fdatawait(ip->i_mapping);
 	}
 

fs/xfs/linux-2.6/xfs_super.c

@@ -766,6 +766,18 @@ linvfs_show_options(
 	return error;
 }
 
+STATIC int
+linvfs_quotasync(
+	struct super_block	*sb,
+	int			type)
+{
+	struct vfs		*vfsp = LINVFS_GET_VFS(sb);
+	int			error;
+
+	VFS_QUOTACTL(vfsp, Q_XQUOTASYNC, 0, (caddr_t)NULL, error);
+	return -error;
+}
+
 STATIC int
 linvfs_getxstate(
 	struct super_block	*sb,
@@ -934,6 +946,7 @@ STATIC struct super_operations linvfs_sops = {
 };
 
 STATIC struct quotactl_ops linvfs_qops = {
+	.quota_sync		= linvfs_quotasync,
 	.get_xstate		= linvfs_getxstate,
 	.set_xstate		= linvfs_setxstate,
 	.get_xquota		= linvfs_getxquota,