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xfs: add parent attributes to symlink

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This patch modifies xfs_symlink to add a parent pointer to the inode.

Signed-off-by: Allison Henderson <allison.henderson@oracle.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
[djwong: minor rebase fixups]
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Allison Henderson 2024-04-22 09:47:49 -07:00 committed by Darrick J. Wong
parent f1097be220
commit 5d31a85dcc
4 changed files with 45 additions and 8 deletions
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17
fs/xfs/libxfs/xfs_trans_space.c
View File

@ -64,3 +64,20 @@ xfs_link_space_res(
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;
}

4
fs/xfs/libxfs/xfs_trans_space.h
View File

@ -95,8 +95,6 @@
XFS_DIRREMOVE_SPACE_RES(mp)
#define XFS_RENAME_SPACE_RES(mp,nl) \
(XFS_DIRREMOVE_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
#define XFS_SYMLINK_SPACE_RES(mp,nl,b) \
(XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl) + (b))
#define XFS_IFREE_SPACE_RES(mp) \
(xfs_has_finobt(mp) ? M_IGEO(mp)->inobt_maxlevels : 0)
@ -106,5 +104,7 @@ unsigned int xfs_parent_calc_space_res(struct xfs_mount *mp,
unsigned int xfs_create_space_res(struct xfs_mount *mp, unsigned int namelen);
unsigned int xfs_mkdir_space_res(struct xfs_mount *mp, unsigned int namelen);
unsigned int xfs_link_space_res(struct xfs_mount *mp, unsigned int namelen);
unsigned int xfs_symlink_space_res(struct xfs_mount *mp, unsigned int namelen,
unsigned int fsblocks);
#endif /* __XFS_TRANS_SPACE_H__ */

2
fs/xfs/scrub/symlink_repair.c
View File

@ -421,7 +421,7 @@ xrep_symlink_rebuild(
* unlikely.
*/
fs_blocks = xfs_symlink_blocks(sc->mp, target_len);
resblks = XFS_SYMLINK_SPACE_RES(sc->mp, target_len, fs_blocks);
resblks = xfs_symlink_space_res(sc->mp, target_len, fs_blocks);
error = xfs_trans_reserve_quota_nblks(sc->tp, sc->tempip, resblks, 0,
true);
if (error)

30
fs/xfs/xfs_symlink.c
View File

@ -25,6 +25,8 @@
#include "xfs_error.h"
#include "xfs_health.h"
#include "xfs_symlink_remote.h"
#include "xfs_parent.h"
#include "xfs_defer.h"
int
xfs_readlink(
@ -100,6 +102,7 @@ xfs_symlink(
struct xfs_dquot *pdqp = NULL;
uint resblks;
xfs_ino_t ino;
struct xfs_parent_args *ppargs;
*ipp = NULL;
@ -130,18 +133,24 @@ xfs_symlink(
/*
* The symlink will fit into the inode data fork?
* There can't be any attributes so we get the whole variable part.
* If there are no parent pointers, then there wont't be any attributes.
* So we get the whole variable part, and do not need to reserve extra
* blocks. Otherwise, we need to reserve the blocks.
*/
if (pathlen <= XFS_LITINO(mp))
if (pathlen <= XFS_LITINO(mp) && !xfs_has_parent(mp))
fs_blocks = 0;
else
fs_blocks = xfs_symlink_blocks(mp, pathlen);
resblks = XFS_SYMLINK_SPACE_RES(mp, link_name->len, fs_blocks);
resblks = xfs_symlink_space_res(mp, link_name->len, fs_blocks);
error = xfs_parent_start(mp, &ppargs);
if (error)
goto out_release_dquots;
error = xfs_trans_alloc_icreate(mp, &M_RES(mp)->tr_symlink, udqp, gdqp,
pdqp, resblks, &tp);
if (error)
goto out_release_dquots;
goto out_parent;
xfs_ilock(dp, XFS_ILOCK_EXCL | XFS_ILOCK_PARENT);
unlock_dp_on_error = true;
@ -161,7 +170,7 @@ xfs_symlink(
if (!error)
error = xfs_init_new_inode(idmap, tp, dp, ino,
S_IFLNK | (mode & ~S_IFMT), 1, 0, prid,
false, &ip);
xfs_has_parent(mp), &ip);
if (error)
goto out_trans_cancel;
@ -195,6 +204,14 @@ xfs_symlink(
goto out_trans_cancel;
xfs_trans_ichgtime(tp, dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
xfs_trans_log_inode(tp, dp, XFS_ILOG_CORE);
/* Add parent pointer for the new symlink. */
if (ppargs) {
error = xfs_parent_addname(tp, ppargs, dp, link_name, ip);
if (error)
goto out_trans_cancel;
}
xfs_dir_update_hook(dp, ip, 1, link_name);
/*
@ -216,6 +233,7 @@ xfs_symlink(
*ipp = ip;
xfs_iunlock(ip, XFS_ILOCK_EXCL);
xfs_iunlock(dp, XFS_ILOCK_EXCL);
xfs_parent_finish(mp, ppargs);
return 0;
out_trans_cancel:
@ -231,6 +249,8 @@ out_release_inode:
xfs_finish_inode_setup(ip);
xfs_irele(ip);
}
out_parent:
xfs_parent_finish(mp, ppargs);
out_release_dquots:
xfs_qm_dqrele(udqp);
xfs_qm_dqrele(gdqp);