From: Allison Henderson <allison.henderson@xxxxxxxxxx>
This patch removes the parent pointer attribute during unlink
Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
Signed-off-by: Allison Henderson <allison.henderson@xxxxxxxxxx>
Reviewed-by: Darrick J. Wong <djwong@xxxxxxxxxx>
[djwong: adjust to new ondisk format, minor rebase fixes]
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
---
libxfs/libxfs_api_defs.h | 1 +
libxfs/xfs_parent.c | 39 +++++++++++++++++++++++++++++++++++++++
libxfs/xfs_parent.h | 16 ++++++++++++++++
libxfs/xfs_trans_space.c | 13 +++++++++++++
libxfs/xfs_trans_space.h | 3 +--
repair/phase6.c | 6 +++---
6 files changed, 73 insertions(+), 5 deletions(-)
diff --git a/libxfs/libxfs_api_defs.h b/libxfs/libxfs_api_defs.h
index 6ab10be3ad6..1b69124767c 100644
--- a/libxfs/libxfs_api_defs.h
+++ b/libxfs/libxfs_api_defs.h
@@ -193,6 +193,7 @@
#define xfs_refcountbt_stage_cursor libxfs_refcountbt_stage_cursor
#define xfs_refcount_get_rec libxfs_refcount_get_rec
#define xfs_refcount_lookup_le libxfs_refcount_lookup_le
+#define xfs_remove_space_res libxfs_remove_space_res
#define xfs_rmap_alloc libxfs_rmap_alloc
#define xfs_rmapbt_calc_reserves libxfs_rmapbt_calc_reserves
diff --git a/libxfs/xfs_parent.c b/libxfs/xfs_parent.c
index 32e1d1f62ec..b3004af9161 100644
--- a/libxfs/xfs_parent.c
+++ b/libxfs/xfs_parent.c
@@ -28,6 +28,7 @@
#include "xfs_da_format.h"
#include "xfs_format.h"
#include "xfs_trans_space.h"
+#include "xfs_health.h"
struct kmem_cache *xfs_parent_args_cache;
@@ -195,6 +196,44 @@ xfs_parent_addname(
return 0;
}
+/* Remove a parent pointer to reflect a dirent removal. */
+int
+xfs_parent_removename(
+ struct xfs_trans *tp,
+ struct xfs_parent_args *ppargs,
+ struct xfs_inode *dp,
+ const struct xfs_name *parent_name,
+ struct xfs_inode *child)
+{
+ struct xfs_da_args *args = &ppargs->args;
+
+ if (XFS_IS_CORRUPT(tp->t_mountp,
+ !xfs_parent_valuecheck(tp->t_mountp, parent_name->name,
+ parent_name->len)))
+ return -EFSCORRUPTED;
+
+ /*
+ * For regular attrs, removing an attr from a !hasattr inode is a nop.
+ * For parent pointers, we require that the pointer must exist if the
+ * caller wants us to remove the pointer.
+ */
+ if (XFS_IS_CORRUPT(child->i_mount, !xfs_inode_hasattr(child))) {
+ xfs_inode_mark_sick(child, XFS_SICK_INO_PARENT);
+ return -EFSCORRUPTED;
+ }
+
+ xfs_init_parent_name_rec(&ppargs->rec, dp, parent_name, child);
+ args->hashval = xfs_parent_hashname(dp, ppargs);
+
+ args->trans = tp;
+ args->dp = child;
+
+ xfs_init_parent_davalue(&ppargs->args, parent_name);
+
+ xfs_attr_defer_add(args, XFS_ATTRI_OP_FLAGS_REMOVE);
+ return 0;
+}
+
/* Free a parent pointer context object. */
void
xfs_parent_args_free(
diff --git a/libxfs/xfs_parent.h b/libxfs/xfs_parent.h
index e2115a2b964..31349130a33 100644
--- a/libxfs/xfs_parent.h
+++ b/libxfs/xfs_parent.h
@@ -79,6 +79,22 @@ xfs_parent_add(struct xfs_trans *tp, struct xfs_parent_args *ppargs,
return 0;
}
+int xfs_parent_removename(struct xfs_trans *tp, struct xfs_parent_args *ppargs,
+ struct xfs_inode *dp, const struct xfs_name *parent_name,
+ struct xfs_inode *child);
+
+/* Schedule a parent pointer removal. */
+static inline int
+xfs_parent_remove(struct xfs_trans *tp, struct xfs_parent_args *ppargs,
+ struct xfs_inode *dp, const struct xfs_name *parent_name,
+ struct xfs_inode *child)
+{
+ if (ppargs)
+ return xfs_parent_removename(tp, ppargs, dp, parent_name,
+ child);
+ return 0;
+}
+
void xfs_parent_args_free(struct xfs_mount *mp, struct xfs_parent_args *ppargs);
/* Finish a parent pointer update by freeing the context object. */
diff --git a/libxfs/xfs_trans_space.c b/libxfs/xfs_trans_space.c
index bf4a41492c2..86a91a3a844 100644
--- a/libxfs/xfs_trans_space.c
+++ b/libxfs/xfs_trans_space.c
@@ -81,3 +81,16 @@ xfs_symlink_space_res(
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;
+}
diff --git a/libxfs/xfs_trans_space.h b/libxfs/xfs_trans_space.h
index 354ad1d6e18..a4490813c56 100644
--- a/libxfs/xfs_trans_space.h
+++ b/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_REMOVE_SPACE_RES(mp) \
- 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_IFREE_SPACE_RES(mp) \
@@ -106,5 +104,6 @@ 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);
+unsigned int xfs_remove_space_res(struct xfs_mount *mp, unsigned int namelen);
#endif /* __XFS_TRANS_SPACE_H__ */
diff --git a/repair/phase6.c b/repair/phase6.c
index 825f0cf3956..9b43e58b3d3 100644
--- a/repair/phase6.c
+++ b/repair/phase6.c
@@ -1275,7 +1275,7 @@ longform_dir2_rebuild(
libxfs_dir_ino_validate(mp, pip.i_ino))
pip.i_ino = mp->m_sb.sb_rootino;
- nres = XFS_REMOVE_SPACE_RES(mp);
+ nres = libxfs_remove_space_res(mp, 0);
error = -libxfs_trans_alloc(mp, &M_RES(mp)->tr_remove, nres, 0, 0, &tp);
if (error)
res_failed(error);
@@ -1381,7 +1381,7 @@ dir2_kill_block(
int nres;
xfs_trans_t *tp;
- nres = XFS_REMOVE_SPACE_RES(mp);
+ nres = libxfs_remove_space_res(mp, 0);
error = -libxfs_trans_alloc(mp, &M_RES(mp)->tr_remove, nres, 0, 0, &tp);
if (error)
res_failed(error);
@@ -2900,7 +2900,7 @@ process_dir_inode(
* inode but it's easier than wedging a
* new define in ourselves.
*/
- nres = no_modify ? 0 : XFS_REMOVE_SPACE_RES(mp);
+ nres = no_modify ? 0 : libxfs_remove_space_res(mp, 0);
error = -libxfs_trans_alloc(mp, &M_RES(mp)->tr_remove,
nres, 0, 0, &tp);
if (error)
