xfs/libxfs/xfs_defer.c

965 	struct xfs_defer_capture	*dfc;
977 	dfc = kzalloc(sizeof(*dfc), GFP_KERNEL | __GFP_NOFAIL);
978 	INIT_LIST_HEAD(&dfc->dfc_list);
979 	INIT_LIST_HEAD(&dfc->dfc_dfops);
982 	list_splice_init(&tp->t_dfops, &dfc->dfc_dfops);
983 	dfc->dfc_tpflags = tp->t_flags & XFS_TRANS_LOWMODE;
987 	dfc->dfc_blkres = tp->t_blk_res - tp->t_blk_res_used;
988 	dfc->dfc_rtxres = tp->t_rtx_res - tp->t_rtx_res_used;
991 	dfc->dfc_logres = tp->t_log_res;
993 	error = xfs_defer_save_resources(&dfc->dfc_held, tp);
1008 	for (i = 0; i < dfc->dfc_held.dr_inos; i++) {
1009 		xfs_assert_ilocked(dfc->dfc_held.dr_ip[i], XFS_ILOCK_EXCL);
1010 		ihold(VFS_I(dfc->dfc_held.dr_ip[i]));
1013 	for (i = 0; i < dfc->dfc_held.dr_bufs; i++)
1014 		xfs_buf_hold(dfc->dfc_held.dr_bp[i]);
1016 	return dfc;
1023 	struct xfs_defer_capture	*dfc)
1027 	xfs_defer_pending_abort_list(mp, &dfc->dfc_dfops);
1028 	xfs_defer_cancel_list(mp, &dfc->dfc_dfops);
1030 	for (i = 0; i < dfc->dfc_held.dr_bufs; i++)
1031 		xfs_buf_relse(dfc->dfc_held.dr_bp[i]);
1033 	for (i = 0; i < dfc->dfc_held.dr_inos; i++)
1034 		xfs_irele(dfc->dfc_held.dr_ip[i]);
1036 	kfree(dfc);
1053 	struct xfs_defer_capture	*dfc;
1057 	dfc = xfs_defer_ops_capture(tp);
1058 	if (IS_ERR(dfc)) {
1060 		return PTR_ERR(dfc);
1062 	if (!dfc)
1068 		xfs_defer_ops_capture_abort(mp, dfc);
1072 	list_add_tail(&dfc->dfc_list, capture_list);
1084 	struct xfs_defer_capture	*dfc,
1094 	if (dfc->dfc_held.dr_inos == 2)
1095 		xfs_lock_two_inodes(dfc->dfc_held.dr_ip[0], XFS_ILOCK_EXCL,
1096 				    dfc->dfc_held.dr_ip[1], XFS_ILOCK_EXCL);
1097 	else if (dfc->dfc_held.dr_inos == 1)
1098 		xfs_ilock(dfc->dfc_held.dr_ip[0], XFS_ILOCK_EXCL);
1100 	for (i = 0; i < dfc->dfc_held.dr_bufs; i++)
1101 		xfs_buf_lock(dfc->dfc_held.dr_bp[i]);
1104 	xfs_defer_restore_resources(tp, &dfc->dfc_held);
1105 	memcpy(dres, &dfc->dfc_held, sizeof(struct xfs_defer_resources));
1109 	list_splice_init(&dfc->dfc_dfops, &tp->t_dfops);
1110 	tp->t_flags |= dfc->dfc_tpflags;
1112 	kfree(dfc);