xfs/libxfs/xfs_defer.c

966 	struct xfs_defer_capture	*dfc;
978 	dfc = kzalloc(sizeof(*dfc), GFP_KERNEL | __GFP_NOFAIL);
979 	INIT_LIST_HEAD(&dfc->dfc_list);
980 	INIT_LIST_HEAD(&dfc->dfc_dfops);
983 	list_splice_init(&tp->t_dfops, &dfc->dfc_dfops);
984 	dfc->dfc_tpflags = tp->t_flags & XFS_TRANS_LOWMODE;
988 	dfc->dfc_blkres = tp->t_blk_res - tp->t_blk_res_used;
989 	dfc->dfc_rtxres = tp->t_rtx_res - tp->t_rtx_res_used;
992 	dfc->dfc_logres = tp->t_log_res;
994 	error = xfs_defer_save_resources(&dfc->dfc_held, tp);
1009 	for (i = 0; i < dfc->dfc_held.dr_inos; i++) {
1010 		xfs_assert_ilocked(dfc->dfc_held.dr_ip[i], XFS_ILOCK_EXCL);
1011 		ihold(VFS_I(dfc->dfc_held.dr_ip[i]));
1014 	for (i = 0; i < dfc->dfc_held.dr_bufs; i++)
1015 		xfs_buf_hold(dfc->dfc_held.dr_bp[i]);
1017 	return dfc;
1024 	struct xfs_defer_capture	*dfc)
1028 	xfs_defer_pending_abort_list(mp, &dfc->dfc_dfops);
1029 	xfs_defer_cancel_list(mp, &dfc->dfc_dfops);
1031 	for (i = 0; i < dfc->dfc_held.dr_bufs; i++)
1032 		xfs_buf_relse(dfc->dfc_held.dr_bp[i]);
1034 	for (i = 0; i < dfc->dfc_held.dr_inos; i++)
1035 		xfs_irele(dfc->dfc_held.dr_ip[i]);
1037 	kfree(dfc);
1054 	struct xfs_defer_capture	*dfc;
1058 	dfc = xfs_defer_ops_capture(tp);
1059 	if (IS_ERR(dfc)) {
1061 		return PTR_ERR(dfc);
1063 	if (!dfc)
1069 		xfs_defer_ops_capture_abort(mp, dfc);
1073 	list_add_tail(&dfc->dfc_list, capture_list);
1085 	struct xfs_defer_capture	*dfc,
1095 	if (dfc->dfc_held.dr_inos > 2) {
1096 		xfs_sort_inodes(dfc->dfc_held.dr_ip, dfc->dfc_held.dr_inos);
1097 		xfs_lock_inodes(dfc->dfc_held.dr_ip, dfc->dfc_held.dr_inos,
1099 	} else if (dfc->dfc_held.dr_inos == 2)
1100 		xfs_lock_two_inodes(dfc->dfc_held.dr_ip[0], XFS_ILOCK_EXCL,
1101 				    dfc->dfc_held.dr_ip[1], XFS_ILOCK_EXCL);
1102 	else if (dfc->dfc_held.dr_inos == 1)
1103 		xfs_ilock(dfc->dfc_held.dr_ip[0], XFS_ILOCK_EXCL);
1105 	for (i = 0; i < dfc->dfc_held.dr_bufs; i++)
1106 		xfs_buf_lock(dfc->dfc_held.dr_bp[i]);
1109 	xfs_defer_restore_resources(tp, &dfc->dfc_held);
1110 	memcpy(dres, &dfc->dfc_held, sizeof(struct xfs_defer_resources));
1114 	list_splice_init(&dfc->dfc_dfops, &tp->t_dfops);
1115 	tp->t_flags |= dfc->dfc_tpflags;
1117 	kfree(dfc);