From: Allison Henderson <allison.henderson@xxxxxxxxxx>
This patch removes the old parent pointer attribute during the rename
operation, and re-adds the updated parent pointer. In the case of
xfs_cross_rename, we modify the routine not to roll the transaction just
yet. We will do this after the parent pointer is added in the calling
xfs_rename function.
Signed-off-by: Allison Henderson <allison.henderson@xxxxxxxxxx>
---
fs/xfs/libxfs/xfs_attr.c | 2 +-
fs/xfs/libxfs/xfs_attr.h | 1 +
fs/xfs/libxfs/xfs_parent.c | 31 ++++++++++++
fs/xfs/libxfs/xfs_parent.h | 7 +++
fs/xfs/xfs_inode.c | 96 +++++++++++++++++++++++++++++++++++---
5 files changed, 130 insertions(+), 7 deletions(-)
diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
index e967728d1ee7..3f9bd8401f33 100644
--- a/fs/xfs/libxfs/xfs_attr.c
+++ b/fs/xfs/libxfs/xfs_attr.c
@@ -923,7 +923,7 @@ xfs_attr_defer_add(
}
/* Sets an attribute for an inode as a deferred operation */
-static int
+int
xfs_attr_defer_replace(
struct xfs_da_args *args)
{
diff --git a/fs/xfs/libxfs/xfs_attr.h b/fs/xfs/libxfs/xfs_attr.h
index 033005542b9e..985761264d1f 100644
--- a/fs/xfs/libxfs/xfs_attr.h
+++ b/fs/xfs/libxfs/xfs_attr.h
@@ -546,6 +546,7 @@ int xfs_attr_get_ilocked(struct xfs_da_args *args);
int xfs_attr_get(struct xfs_da_args *args);
int xfs_attr_defer_add(struct xfs_da_args *args);
int xfs_attr_defer_remove(struct xfs_da_args *args);
+int xfs_attr_defer_replace(struct xfs_da_args *args);
int xfs_attr_set(struct xfs_da_args *args);
int xfs_attr_set_iter(struct xfs_attr_intent *attr);
int xfs_attr_remove_iter(struct xfs_attr_intent *attr);
diff --git a/fs/xfs/libxfs/xfs_parent.c b/fs/xfs/libxfs/xfs_parent.c
index c09f49b7c241..49ac95a301c4 100644
--- a/fs/xfs/libxfs/xfs_parent.c
+++ b/fs/xfs/libxfs/xfs_parent.c
@@ -142,6 +142,37 @@ xfs_parent_defer_remove(
return xfs_attr_defer_remove(args);
}
+
+int
+xfs_parent_defer_replace(
+ struct xfs_trans *tp,
+ struct xfs_inode *old_ip,
+ struct xfs_parent_defer *old_parent,
+ xfs_dir2_dataptr_t old_diroffset,
+ struct xfs_name *parent_name,
+ struct xfs_inode *new_ip,
+ struct xfs_parent_defer *new_parent,
+ xfs_dir2_dataptr_t new_diroffset,
+ struct xfs_inode *child)
+{
+ struct xfs_da_args *args = &new_parent->args;
+
+ xfs_init_parent_name_rec(&old_parent->rec, old_ip, old_diroffset);
+ xfs_init_parent_name_rec(&new_parent->rec, new_ip, new_diroffset);
+ new_parent->args.name = (const uint8_t *)&old_parent->rec;
+ new_parent->args.namelen = sizeof(struct xfs_parent_name_rec);
+ new_parent->args.new_name = (const uint8_t *)&new_parent->rec;
+ new_parent->args.new_namelen = sizeof(struct xfs_parent_name_rec);
+ args->trans = tp;
+ args->dp = child;
+ if (parent_name) {
+ new_parent->args.value = (void *)parent_name->name;
+ new_parent->args.valuelen = parent_name->len;
+ }
+ args->hashval = xfs_da_hashname(args->name, args->namelen);
+ return xfs_attr_defer_replace(args);
+}
+
void
xfs_parent_cancel(
xfs_mount_t *mp,
diff --git a/fs/xfs/libxfs/xfs_parent.h b/fs/xfs/libxfs/xfs_parent.h
index 1c506532c624..5d8966a12084 100644
--- a/fs/xfs/libxfs/xfs_parent.h
+++ b/fs/xfs/libxfs/xfs_parent.h
@@ -27,6 +27,13 @@ int xfs_parent_init(xfs_mount_t *mp, struct xfs_parent_defer **parentp);
int xfs_parent_defer_add(struct xfs_trans *tp, struct xfs_parent_defer *parent,
struct xfs_inode *dp, struct xfs_name *parent_name,
xfs_dir2_dataptr_t diroffset, struct xfs_inode *child);
+int xfs_parent_defer_replace(struct xfs_trans *tp, struct xfs_inode *old_ip,
+ struct xfs_parent_defer *old_parent,
+ xfs_dir2_dataptr_t old_diroffset,
+ struct xfs_name *parent_name, struct xfs_inode *new_ip,
+ struct xfs_parent_defer *new_parent,
+ xfs_dir2_dataptr_t new_diroffset,
+ struct xfs_inode *child);
int xfs_parent_defer_remove(struct xfs_trans *tp, struct xfs_inode *dp,
struct xfs_parent_defer *parent,
xfs_dir2_dataptr_t diroffset,
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index b6b805ea30e5..a882daaeaf63 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -2915,7 +2915,7 @@ xfs_rename_alloc_whiteout(
int error;
error = xfs_create_tmpfile(mnt_userns, dp, S_IFCHR | WHITEOUT_MODE,
- false, &tmpfile);
+ xfs_has_parent(dp->i_mount), &tmpfile);
if (error)
return error;
@@ -2941,6 +2941,31 @@ xfs_rename_alloc_whiteout(
return 0;
}
+unsigned int
+xfs_rename_space_res(
+ struct xfs_mount *mp,
+ struct xfs_name *src_name,
+ struct xfs_parent_defer *target_parent_ptr,
+ struct xfs_name *target_name,
+ struct xfs_parent_defer *new_parent_ptr,
+ struct xfs_inode *wip)
+{
+ unsigned int ret;
+
+ ret = XFS_DIRREMOVE_SPACE_RES(mp) +
+ XFS_DIRENTER_SPACE_RES(mp, target_name->len);
+
+ if (new_parent_ptr) {
+ if (wip)
+ ret += xfs_pptr_calc_space_res(mp, src_name->len);
+ ret += 2 * xfs_pptr_calc_space_res(mp, target_name->len);
+ }
+ if (target_parent_ptr)
+ ret += xfs_pptr_calc_space_res(mp, target_name->len);
+
+ return ret;
+}
+
/*
* xfs_rename
*/
@@ -2967,6 +2992,12 @@ xfs_rename(
int spaceres;
bool retried = false;
int error, nospace_error = 0;
+ xfs_dir2_dataptr_t new_diroffset;
+ xfs_dir2_dataptr_t old_diroffset;
+ struct xfs_parent_defer *old_parent_ptr = NULL;
+ struct xfs_parent_defer *new_parent_ptr = NULL;
+ struct xfs_parent_defer *target_parent_ptr = NULL;
+ struct xfs_parent_defer *wip_parent_ptr = NULL;
trace_xfs_rename(src_dp, target_dp, src_name, target_name);
@@ -2990,10 +3021,29 @@ xfs_rename(
xfs_sort_for_rename(src_dp, target_dp, src_ip, target_ip, wip,
inodes, &num_inodes);
+ if (xfs_has_parent(mp)) {
+ error = xfs_parent_init(mp, &old_parent_ptr);
+ if (error)
+ goto out_release_wip;
+ error = xfs_parent_init(mp, &new_parent_ptr);
+ if (error)
+ goto out_release_wip;
+ if (wip) {
+ error = xfs_parent_init(mp, &wip_parent_ptr);
+ if (error)
+ goto out_release_wip;
+ }
+ if (target_ip != NULL) {
+ error = xfs_parent_init(mp, &target_parent_ptr);
+ if (error)
+ goto out_release_wip;
+ }
+ }
retry:
nospace_error = 0;
- spaceres = XFS_RENAME_SPACE_RES(mp, target_name->len);
+ spaceres = xfs_rename_space_res(mp, src_name, target_parent_ptr,
+ target_name, new_parent_ptr, wip);
error = xfs_trans_alloc(mp, &M_RES(mp)->tr_rename, spaceres, 0, 0, &tp);
if (error == -ENOSPC) {
nospace_error = error;
@@ -3165,7 +3215,7 @@ xfs_rename(
* to account for the ".." reference from the new entry.
*/
error = xfs_dir_createname(tp, target_dp, target_name,
- src_ip->i_ino, spaceres, NULL);
+ src_ip->i_ino, spaceres, &new_diroffset);
if (error)
goto out_trans_cancel;
@@ -3186,7 +3236,7 @@ xfs_rename(
* name at the destination directory, remove it first.
*/
error = xfs_dir_replace(tp, target_dp, target_name,
- src_ip->i_ino, spaceres, NULL);
+ src_ip->i_ino, spaceres, &new_diroffset);
if (error)
goto out_trans_cancel;
@@ -3259,14 +3309,39 @@ xfs_rename(
*/
if (wip)
error = xfs_dir_replace(tp, src_dp, src_name, wip->i_ino,
- spaceres, NULL);
+ spaceres, &old_diroffset);
else
error = xfs_dir_removename(tp, src_dp, src_name, src_ip->i_ino,
- spaceres, NULL);
+ spaceres, &old_diroffset);
if (error)
goto out_trans_cancel;
+ if (new_parent_ptr) {
+ if (wip) {
+ error = xfs_parent_defer_add(tp, wip_parent_ptr,
+ src_dp, src_name,
+ old_diroffset, wip);
+ if (error)
+ goto out_trans_cancel;
+ }
+
+ error = xfs_parent_defer_replace(tp, src_dp, old_parent_ptr,
+ old_diroffset, target_name,
+ target_dp, new_parent_ptr,
+ new_diroffset, src_ip);
+ if (error)
+ goto out_trans_cancel;
+ }
+
+ if (target_parent_ptr) {
+ error = xfs_parent_defer_remove(tp, target_dp,
+ target_parent_ptr,
+ new_diroffset, target_ip);
+ if (error)
+ goto out_trans_cancel;
+ }
+
xfs_trans_ichgtime(tp, src_dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
xfs_trans_log_inode(tp, src_dp, XFS_ILOG_CORE);
if (new_parent)
@@ -3281,6 +3356,15 @@ xfs_rename(
out_unlock:
xfs_iunlock_after_rename(inodes, num_inodes);
out_release_wip:
+ if (new_parent_ptr)
+ xfs_parent_cancel(mp, new_parent_ptr);
+ if (old_parent_ptr)
+ xfs_parent_cancel(mp, old_parent_ptr);
+ if (target_parent_ptr)
+ xfs_parent_cancel(mp, target_parent_ptr);
+ if (wip_parent_ptr)
+ xfs_parent_cancel(mp, wip_parent_ptr);
+
if (wip)
xfs_irele(wip);
if (error == -ENOSPC && nospace_error)
--
2.25.1
