mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-09-21 20:22:13 +08:00
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
|
|
/*
|
|
* Copyright (c) 2000,2005 Silicon Graphics, Inc.
|
|
* All Rights Reserved.
|
|
*/
|
|
#include "xfs.h"
|
|
#include "xfs_fs.h"
|
|
#include "xfs_shared.h"
|
|
#include "xfs_format.h"
|
|
#include "xfs_da_format.h"
|
|
#include "xfs_log_format.h"
|
|
#include "xfs_trans_resv.h"
|
|
#include "xfs_mount.h"
|
|
#include "xfs_da_btree.h"
|
|
#include "xfs_bmap_btree.h"
|
|
#include "xfs_trans_space.h"
|
|
|
|
/* Calculate the disk space required to add a parent pointer. */
|
|
unsigned int
|
|
xfs_parent_calc_space_res(
|
|
struct xfs_mount *mp,
|
|
unsigned int namelen)
|
|
{
|
|
/*
|
|
* Parent pointers are always the first attr in an attr tree, and never
|
|
* larger than a block
|
|
*/
|
|
return XFS_DAENTER_SPACE_RES(mp, XFS_ATTR_FORK) +
|
|
XFS_NEXTENTADD_SPACE_RES(mp, namelen, XFS_ATTR_FORK);
|
|
}
|
|
|
|
unsigned int
|
|
xfs_create_space_res(
|
|
struct xfs_mount *mp,
|
|
unsigned int namelen)
|
|
{
|
|
unsigned int ret;
|
|
|
|
ret = XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp, namelen);
|
|
if (xfs_has_parent(mp))
|
|
ret += xfs_parent_calc_space_res(mp, namelen);
|
|
|
|
return ret;
|
|
}
|
|
|
|
unsigned int
|
|
xfs_mkdir_space_res(
|
|
struct xfs_mount *mp,
|
|
unsigned int namelen)
|
|
{
|
|
return xfs_create_space_res(mp, namelen);
|
|
}
|
|
|
|
unsigned int
|
|
xfs_link_space_res(
|
|
struct xfs_mount *mp,
|
|
unsigned int namelen)
|
|
{
|
|
unsigned int ret;
|
|
|
|
ret = XFS_DIRENTER_SPACE_RES(mp, namelen);
|
|
if (xfs_has_parent(mp))
|
|
ret += xfs_parent_calc_space_res(mp, namelen);
|
|
|
|
return ret;
|
|
}
|
|
|
|
unsigned int
|
|
xfs_symlink_space_res(
|
|
struct xfs_mount *mp,
|
|
unsigned int namelen,
|
|
unsigned int fsblocks)
|
|
{
|
|
unsigned int ret;
|
|
|
|
ret = XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp, namelen) +
|
|
fsblocks;
|
|
|
|
if (xfs_has_parent(mp))
|
|
ret += xfs_parent_calc_space_res(mp, namelen);
|
|
|
|
return ret;
|
|
}
|
|
|
|
unsigned int
|
|
xfs_remove_space_res(
|
|
struct xfs_mount *mp,
|
|
unsigned int namelen)
|
|
{
|
|
unsigned int ret = XFS_DIRREMOVE_SPACE_RES(mp);
|
|
|
|
if (xfs_has_parent(mp))
|
|
ret += xfs_parent_calc_space_res(mp, namelen);
|
|
|
|
return ret;
|
|
}
|
|
|
|
unsigned int
|
|
xfs_rename_space_res(
|
|
struct xfs_mount *mp,
|
|
unsigned int src_namelen,
|
|
bool target_exists,
|
|
unsigned int target_namelen,
|
|
bool has_whiteout)
|
|
{
|
|
unsigned int ret;
|
|
|
|
ret = XFS_DIRREMOVE_SPACE_RES(mp) +
|
|
XFS_DIRENTER_SPACE_RES(mp, target_namelen);
|
|
|
|
if (xfs_has_parent(mp)) {
|
|
if (has_whiteout)
|
|
ret += xfs_parent_calc_space_res(mp, src_namelen);
|
|
ret += 2 * xfs_parent_calc_space_res(mp, target_namelen);
|
|
}
|
|
|
|
if (target_exists)
|
|
ret += xfs_parent_calc_space_res(mp, target_namelen);
|
|
|
|
return ret;
|
|
}
|