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.
Reviewed-by: Darrick J. Wong <djwong@xxxxxxxxxx>
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 | 47 +++++++++++--
fs/xfs/libxfs/xfs_parent.h | 24 ++++++-
fs/xfs/libxfs/xfs_trans_space.h | 2 -
fs/xfs/xfs_inode.c | 117 +++++++++++++++++++++++++++++---
6 files changed, 174 insertions(+), 19 deletions(-)
diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
index a8db44728b11..57080ea4c869 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 245855a5f969..629762701952 100644
--- a/fs/xfs/libxfs/xfs_parent.c
+++ b/fs/xfs/libxfs/xfs_parent.c
@@ -64,22 +64,27 @@ xfs_init_parent_name_rec(
int
__xfs_parent_init(
struct xfs_mount *mp,
+ bool grab_log,
struct xfs_parent_defer **parentp)
{
struct xfs_parent_defer *parent;
int error;
- error = xfs_attr_grab_log_assist(mp);
- if (error)
- return error;
+ if (grab_log) {
+ error = xfs_attr_grab_log_assist(mp);
+ if (error)
+ return error;
+ }
parent = kmem_cache_zalloc(xfs_parent_intent_cache, GFP_KERNEL);
if (!parent) {
- xfs_attr_rele_log_assist(mp);
+ if (grab_log)
+ xfs_attr_rele_log_assist(mp);
return -ENOMEM;
}
/* init parent da_args */
+ parent->have_log = grab_log;
parent->args.geo = mp->m_attr_geo;
parent->args.whichfork = XFS_ATTR_FORK;
parent->args.attr_filter = XFS_ATTR_PARENT;
@@ -132,12 +137,44 @@ xfs_parent_defer_remove(
return xfs_attr_defer_remove(args);
}
+
+int
+xfs_parent_defer_replace(
+ struct xfs_trans *tp,
+ struct xfs_parent_defer *new_parent,
+ struct xfs_inode *old_dp,
+ xfs_dir2_dataptr_t old_diroffset,
+ struct xfs_name *parent_name,
+ struct xfs_inode *new_dp,
+ xfs_dir2_dataptr_t new_diroffset,
+ struct xfs_inode *child)
+{
+ struct xfs_da_args *args = &new_parent->args;
+
+ xfs_init_parent_name_rec(&new_parent->old_rec, old_dp, old_diroffset);
+ xfs_init_parent_name_rec(&new_parent->rec, new_dp, new_diroffset);
+ new_parent->args.name = (const uint8_t *)&new_parent->old_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;
+
+ ASSERT(parent_name != NULL);
+ 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,
struct xfs_parent_defer *parent)
{
- xlog_drop_incompat_feat(mp->m_log);
+ if (parent->have_log)
+ xlog_drop_incompat_feat(mp->m_log);
kmem_cache_free(xfs_parent_intent_cache, parent);
}
diff --git a/fs/xfs/libxfs/xfs_parent.h b/fs/xfs/libxfs/xfs_parent.h
index 0f39d033d84e..039005883bb6 100644
--- a/fs/xfs/libxfs/xfs_parent.h
+++ b/fs/xfs/libxfs/xfs_parent.h
@@ -14,7 +14,9 @@ extern struct kmem_cache *xfs_parent_intent_cache;
*/
struct xfs_parent_defer {
struct xfs_parent_name_rec rec;
+ struct xfs_parent_name_rec old_rec;
struct xfs_da_args args;
+ bool have_log;
};
/*
@@ -23,7 +25,8 @@ struct xfs_parent_defer {
void xfs_init_parent_name_rec(struct xfs_parent_name_rec *rec,
struct xfs_inode *ip,
uint32_t p_diroffset);
-int __xfs_parent_init(struct xfs_mount *mp, struct xfs_parent_defer **parentp);
+int __xfs_parent_init(struct xfs_mount *mp, bool grab_log,
+ struct xfs_parent_defer **parentp);
static inline int
xfs_parent_start(
@@ -33,13 +36,30 @@ xfs_parent_start(
*pp = NULL;
if (xfs_has_parent(mp))
- return __xfs_parent_init(mp, pp);
+ return __xfs_parent_init(mp, true, pp);
+ return 0;
+}
+
+static inline int
+xfs_parent_start_locked(
+ struct xfs_mount *mp,
+ struct xfs_parent_defer **pp)
+{
+ *pp = NULL;
+
+ if (xfs_has_parent(mp))
+ return __xfs_parent_init(mp, false, pp);
return 0;
}
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_parent_defer *new_parent, struct xfs_inode *old_dp,
+ xfs_dir2_dataptr_t old_diroffset, struct xfs_name *parent_name,
+ struct xfs_inode *new_ip, 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/libxfs/xfs_trans_space.h b/fs/xfs/libxfs/xfs_trans_space.h
index b5ab6701e7fb..810610a14c4d 100644
--- a/fs/xfs/libxfs/xfs_trans_space.h
+++ b/fs/xfs/libxfs/xfs_trans_space.h
@@ -91,8 +91,6 @@
XFS_DQUOT_CLUSTER_SIZE_FSB)
#define XFS_QM_QINOCREATE_SPACE_RES(mp) \
XFS_IALLOC_SPACE_RES(mp)
-#define XFS_RENAME_SPACE_RES(mp,nl) \
- (XFS_DIRREMOVE_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
#define XFS_IFREE_SPACE_RES(mp) \
(xfs_has_finobt(mp) ? M_IGEO(mp)->inobt_maxlevels : 0)
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 66d83bef4352..f069556c8dfa 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -2871,7 +2871,7 @@ xfs_rename_alloc_whiteout(
int error;
error = xfs_create_tmpfile(idmap, dp, S_IFCHR | WHITEOUT_MODE,
- false, &tmpfile);
+ xfs_has_parent(dp->i_mount), &tmpfile);
if (error)
return error;
@@ -2897,6 +2897,31 @@ xfs_rename_alloc_whiteout(
return 0;
}
+static 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
*/
@@ -2923,6 +2948,11 @@ 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 *src_ip_pptr = NULL;
+ struct xfs_parent_defer *tgt_ip_pptr = NULL;
+ struct xfs_parent_defer *wip_pptr = NULL;
trace_xfs_rename(src_dp, target_dp, src_name, target_name);
@@ -2947,9 +2977,26 @@ xfs_rename(
xfs_sort_for_rename(src_dp, target_dp, src_ip, target_ip, wip,
inodes, &num_inodes);
+ error = xfs_parent_start(mp, &src_ip_pptr);
+ if (error)
+ goto out_release_wip;
+
+ if (wip) {
+ error = xfs_parent_start_locked(mp, &wip_pptr);
+ if (error)
+ goto out_src_ip_pptr;
+ }
+
+ if (target_ip) {
+ error = xfs_parent_start_locked(mp, &tgt_ip_pptr);
+ if (error)
+ goto out_wip_pptr;
+ }
+
retry:
nospace_error = 0;
- spaceres = XFS_RENAME_SPACE_RES(mp, target_name->len);
+ spaceres = xfs_rename_space_res(mp, src_name, tgt_ip_pptr,
+ target_name, src_ip_pptr, wip);
error = xfs_trans_alloc(mp, &M_RES(mp)->tr_rename, spaceres, 0, 0, &tp);
if (error == -ENOSPC) {
nospace_error = error;
@@ -2958,14 +3005,26 @@ xfs_rename(
&tp);
}
if (error)
- goto out_release_wip;
+ goto out_tgt_ip_pptr;
+
+ /*
+ * We don't allow reservationless renaming when parent pointers are
+ * enabled because we can't back out if the xattrs must grow.
+ */
+ if (src_ip_pptr && nospace_error) {
+ error = nospace_error;
+ xfs_trans_cancel(tp);
+ goto out_tgt_ip_pptr;
+ }
/*
* Attach the dquots to the inodes
*/
error = xfs_qm_vop_rename_dqattach(inodes);
- if (error)
- goto out_trans_cancel;
+ if (error) {
+ xfs_trans_cancel(tp);
+ goto out_tgt_ip_pptr;
+ }
/*
* Lock all the participating inodes. Depending upon whether
@@ -3032,6 +3091,15 @@ xfs_rename(
goto out_trans_cancel;
}
+ /*
+ * We don't allow quotaless renaming when parent pointers are enabled
+ * because we can't back out if the xattrs must grow.
+ */
+ if (src_ip_pptr && nospace_error) {
+ error = nospace_error;
+ goto out_trans_cancel;
+ }
+
/*
* Check for expected errors before we dirty the transaction
* so we can return an error without a transaction abort.
@@ -3122,7 +3190,7 @@ 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;
@@ -3143,7 +3211,7 @@ 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;
@@ -3216,14 +3284,38 @@ 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 (wip_pptr) {
+ error = xfs_parent_defer_add(tp, wip_pptr,
+ src_dp, src_name,
+ old_diroffset, wip);
+ if (error)
+ goto out_trans_cancel;
+ }
+
+ if (src_ip_pptr) {
+ error = xfs_parent_defer_replace(tp, src_ip_pptr, src_dp,
+ old_diroffset, target_name, target_dp,
+ new_diroffset, src_ip);
+ if (error)
+ goto out_trans_cancel;
+ }
+
+ if (tgt_ip_pptr) {
+ error = xfs_parent_defer_remove(tp, target_dp,
+ tgt_ip_pptr,
+ 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)
@@ -3237,6 +3329,13 @@ xfs_rename(
xfs_trans_cancel(tp);
out_unlock:
xfs_iunlock_rename(inodes, num_inodes);
+out_tgt_ip_pptr:
+ xfs_parent_finish(mp, tgt_ip_pptr);
+out_wip_pptr:
+ xfs_parent_finish(mp, wip_pptr);
+out_src_ip_pptr:
+ xfs_parent_finish(mp, src_ip_pptr);
+
out_release_wip:
if (wip)
xfs_irele(wip);
--
2.25.1
