fs/xfs/xfs_reflink.c

147 	int			error;
153 	error = xfs_alloc_read_agf(pag, tp, 0, &agbp);
154 	if (error)
158 	error = xfs_refcount_find_shared(cur, orig_bno, irec->br_blockcount,
160 	xfs_btree_del_cursor(cur, error);
163 	if (!error && *shared_len)
167 	return error;
192 	int			error;
206 	error = xfs_refcount_find_shared(cur, orig_bno, irec->br_blockcount,
208 	xfs_btree_del_cursor(cur, error);
212 	if (!error && *shared_len)
214 	return error;
235 	int			error = 0;
246 		error = xfs_reflink_find_rtshared(mp, NULL, irec,
249 		error = xfs_reflink_find_shared(mp, NULL, irec,
251 	if (error)
252 		return error;
306 	int			error = 0;
324 		error = xfs_bmap_add_extent_unwritten_real(NULL, ip,
327 		if (error)
328 			return error;
331 	return error;
345 	int			error;
350 	error = xfs_reflink_convert_cow_locked(ip, offset_fsb, count_fsb);
352 	return error;
407 	int			error;
424 	error = xfs_reflink_convert_cow_locked(ip, offset_fsb, count_fsb);
425 	if (!error)
428 	return error;
445 	int			error;
461 	error = xfs_trans_alloc_inode(ip, &M_RES(mp)->tr_write, dblocks,
463 	if (error)
464 		return error;
468 	error = xfs_find_trim_cow_extent(ip, imap, cmap, shared, &found);
469 	if (error || !*shared)
479 	error = xfs_bmapi_write(tp, ip, imap->br_startoff, imap->br_blockcount,
482 	if (error)
486 	error = xfs_trans_commit(tp);
487 	if (error)
488 		return error;
495 	return error;
510 	int			error;
517 		error = xfs_trans_alloc_inode(ip, &M_RES(mp)->tr_write, 0, 0,
519 		if (error)
520 			return error;
524 		error = xfs_find_trim_cow_extent(ip, imap, cmap, shared,
526 		if (error || !*shared)
541 		error = xfs_bmapi_write(tp, ip, cmap->br_startoff,
545 		if (error)
549 		error = xfs_trans_commit(tp);
550 		if (error)
551 			return error;
558 	return error;
571 	int			error;
580 	error = xfs_find_trim_cow_extent(ip, imap, cmap, shared, &found);
581 	if (error || !*shared)
582 		return error;
632 	int				error = 0;
662 			error = xfs_free_extent_later(*tpp, del.br_startblock,
666 			if (error)
670 			error = xfs_defer_finish(tpp);
671 			if (error)
691 	return error;
710 	int			error;
722 	error = xfs_trans_alloc(ip->i_mount, &M_RES(ip->i_mount)->tr_write,
724 	if (error)
731 	error = xfs_reflink_cancel_cow_blocks(ip, &tp, offset_fsb, end_fsb,
733 	if (error)
736 	error = xfs_trans_commit(tp);
739 	return error;
745 	trace_xfs_reflink_cancel_cow_range_error(ip, error, _RET_IP_);
746 	return error;
800 	int			error;
830 	error = xfs_iext_count_extend(tp, ip, XFS_DATA_FORK,
832 	if (error)
833 		return error;
837 	error = xfs_bmapi_read(ip, del.br_startoff, del.br_blockcount, &data,
839 	if (error)
840 		return error;
866 		error = xfs_bunmapi(NULL, ip, data.br_startoff,
868 		if (error)
869 			return error;
910 	int			error;
913 	error = xfs_trans_alloc(mp, &M_RES(mp)->tr_write, resblks, 0,
915 	if (error)
916 		return error;
920 	error = xfs_reflink_end_cow_extent_locked(tp, ip, offset_fsb, end_fsb);
921 	if (error)
924 		error = xfs_trans_commit(tp);
926 	return error;
940 	int				error = 0;
979 	while (end_fsb > offset_fsb && !error)
980 		error = xfs_reflink_end_cow_extent(ip, &offset_fsb, end_fsb);
982 	if (error)
983 		trace_xfs_reflink_end_cow_error(ip, error, _RET_IP_);
984 	return error;
1001 	int				error = 0;
1018 	error = xfs_trans_alloc(mp, &M_RES(mp)->tr_atomic_ioend, resblks, 0,
1020 	if (error)
1021 		return error;
1026 	while (end_fsb > offset_fsb && !error) {
1027 		error = xfs_reflink_end_cow_extent_locked(tp, ip, &offset_fsb,
1030 	if (error) {
1031 		trace_xfs_reflink_end_cow_error(ip, error, _RET_IP_);
1034 	error = xfs_trans_commit(tp);
1036 	return error;
1040 	return error;
1071 	int			error = 0;
1077 		error = xfs_refcount_recover_cow_leftovers(pag_group(pag));
1078 		if (error) {
1080 			return error;
1085 		error = xfs_refcount_recover_cow_leftovers(rtg_group(rtg));
1086 		if (error) {
1088 			return error;
1180 	int			error;
1186 	error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp);
1187 	if (error)
1218 	error = xfs_trans_commit(tp);
1219 	if (error)
1221 	return error;
1224 	trace_xfs_reflink_set_inode_flag_error(dest, error, _RET_IP_);
1225 	return error;
1240 	int			error;
1245 	error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp);
1246 	if (error)
1265 	error = xfs_trans_commit(tp);
1266 	if (error)
1268 	return error;
1271 	trace_xfs_reflink_update_inode_size_error(dest, error, _RET_IP_);
1272 	return error;
1289 	int			error = 0;
1303 		error = -ENOSPC;
1305 	return error;
1330 	int			error;
1361 	error = xfs_trans_alloc_inode(ip, &M_RES(mp)->tr_write,
1363 	if (error == -EDQUOT || error == -ENOSPC) {
1365 		error = xfs_trans_alloc_inode(ip, &M_RES(mp)->tr_write,
1368 	if (error)
1377 	error = xfs_bmapi_read(ip, dmap->br_startoff, dmap->br_blockcount,
1379 	if (error)
1401 			error = -EFSCORRUPTED;
1413 		error = xfs_reflink_ag_has_free_space(mp, ip,
1415 		if (error)
1449 		error = xfs_trans_reserve_quota_nblks(tp, ip, dblocks, rblocks,
1451 		if (error)
1461 	error = xfs_iext_count_extend(tp, ip, XFS_DATA_FORK, iext_delta);
1462 	if (error)
1482 		error = xfs_bunmapi(NULL, ip, smap.br_startoff,
1484 		if (error)
1512 	error = xfs_trans_commit(tp);
1520 	if (error)
1521 		trace_xfs_reflink_remap_extent_error(ip, error, _RET_IP_);
1522 	return error;
1543 	int			error = 0;
1556 		error = xfs_bmapi_read(src, srcoff, len, &imap, &nimaps, 0);
1558 		if (error)
1571 			error = -EFSCORRUPTED;
1579 		error = xfs_reflink_remap_extent(dest, &imap, new_isize);
1580 		if (error)
1584 			error = -EINTR;
1596 	if (error)
1597 		trace_xfs_reflink_remap_blocks_error(dest, error, _RET_IP_);
1600 	return error;
1744 	int				error;
1747 	error = xfs_iread_extents(tp, ip, XFS_DATA_FORK);
1748 	if (error)
1749 		return error;
1761 			error = xfs_reflink_find_rtshared(mp, tp, &got,
1764 			error = xfs_reflink_find_shared(mp, tp, &got,
1766 		if (error)
1767 			return error;
1793 	int			error = 0;
1800 	error = xfs_reflink_inode_has_shared_extents(*tpp, ip, &needs_flag);
1801 	if (error || needs_flag)
1802 		return error;
1808 	error = xfs_reflink_cancel_cow_blocks(ip, tpp, 0, XFS_MAX_FILEOFF,
1810 	if (error)
1811 		return error;
1819 	return error;
1832 	int			error = 0;
1835 	error = xfs_trans_alloc(mp, &M_RES(mp)->tr_write, 0, 0, 0, &tp);
1836 	if (error)
1837 		return error;
1842 	error = xfs_reflink_clear_inode_flag(ip, &tp);
1843 	if (error)
1846 	error = xfs_trans_commit(tp);
1847 	if (error)
1856 	return error;
1870 	int			error;
1880 		error = dax_file_unshare(inode, offset, len,
1883 		error = iomap_file_unshare(inode, offset, len,
1886 	if (error)
1889 	error = filemap_write_and_wait_range(inode->i_mapping, offset,
1891 	if (error)
1895 	error = xfs_reflink_try_clear_inode_flag(ip);
1896 	if (error)
1901 	trace_xfs_reflink_unshare_error(ip, error, _RET_IP_);
1902 	return error;