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5a8338c882
This patch removes the old parent pointer attribute during the rename operation, and re-adds the updated parent pointer. Signed-off-by: Allison Henderson <allison.henderson@oracle.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> [djwong: adjust to new ondisk format] Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
122 lines
2.4 KiB
C
122 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2000,2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*/
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#include "xfs.h"
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#include "xfs_fs.h"
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#include "xfs_shared.h"
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#include "xfs_format.h"
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#include "xfs_da_format.h"
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#include "xfs_log_format.h"
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#include "xfs_trans_resv.h"
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#include "xfs_mount.h"
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#include "xfs_da_btree.h"
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#include "xfs_bmap_btree.h"
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#include "xfs_trans_space.h"
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/* Calculate the disk space required to add a parent pointer. */
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unsigned int
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xfs_parent_calc_space_res(
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struct xfs_mount *mp,
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unsigned int namelen)
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{
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/*
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* Parent pointers are always the first attr in an attr tree, and never
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* larger than a block
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*/
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return XFS_DAENTER_SPACE_RES(mp, XFS_ATTR_FORK) +
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XFS_NEXTENTADD_SPACE_RES(mp, namelen, XFS_ATTR_FORK);
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}
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unsigned int
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xfs_create_space_res(
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struct xfs_mount *mp,
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unsigned int namelen)
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{
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unsigned int ret;
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ret = XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp, namelen);
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if (xfs_has_parent(mp))
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ret += xfs_parent_calc_space_res(mp, namelen);
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return ret;
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}
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unsigned int
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xfs_mkdir_space_res(
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struct xfs_mount *mp,
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unsigned int namelen)
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{
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return xfs_create_space_res(mp, namelen);
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}
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unsigned int
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xfs_link_space_res(
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struct xfs_mount *mp,
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unsigned int namelen)
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{
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unsigned int ret;
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ret = XFS_DIRENTER_SPACE_RES(mp, namelen);
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if (xfs_has_parent(mp))
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ret += xfs_parent_calc_space_res(mp, namelen);
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return ret;
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}
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unsigned int
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xfs_symlink_space_res(
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struct xfs_mount *mp,
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unsigned int namelen,
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unsigned int fsblocks)
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{
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unsigned int ret;
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ret = XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp, namelen) +
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fsblocks;
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if (xfs_has_parent(mp))
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ret += xfs_parent_calc_space_res(mp, namelen);
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return ret;
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}
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unsigned int
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xfs_remove_space_res(
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struct xfs_mount *mp,
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unsigned int namelen)
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{
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unsigned int ret = XFS_DIRREMOVE_SPACE_RES(mp);
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if (xfs_has_parent(mp))
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ret += xfs_parent_calc_space_res(mp, namelen);
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return ret;
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}
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unsigned int
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xfs_rename_space_res(
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struct xfs_mount *mp,
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unsigned int src_namelen,
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bool target_exists,
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unsigned int target_namelen,
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bool has_whiteout)
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{
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unsigned int ret;
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ret = XFS_DIRREMOVE_SPACE_RES(mp) +
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XFS_DIRENTER_SPACE_RES(mp, target_namelen);
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if (xfs_has_parent(mp)) {
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if (has_whiteout)
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ret += xfs_parent_calc_space_res(mp, src_namelen);
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ret += 2 * xfs_parent_calc_space_res(mp, target_namelen);
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}
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if (target_exists)
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ret += xfs_parent_calc_space_res(mp, target_namelen);
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return ret;
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}
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