From: Dave Chinner <dchinner@xxxxxxxxxx>
This patch removes the parent pointer attribute during unlink
[bfoster: rebase, use VFS inode generation]
[achender: rebased, changed __unint32_t to xfs_dir2_dataptr_t
implemented xfs_attr_remove_parent]
Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
Signed-off-by: Allison Henderson <allison.henderson@xxxxxxxxxx>
---
fs/xfs/libxfs/xfs_parent.c | 20 ++++++++++++++++++++
fs/xfs/xfs_attr.h | 4 ++++
fs/xfs/xfs_inode.c | 10 +++++++++-
3 files changed, 33 insertions(+), 1 deletion(-)
diff --git a/fs/xfs/libxfs/xfs_parent.c b/fs/xfs/libxfs/xfs_parent.c
index 5eec0ab..9278c89 100644
--- a/fs/xfs/libxfs/xfs_parent.c
+++ b/fs/xfs/libxfs/xfs_parent.c
@@ -91,3 +91,23 @@ xfs_parent_add(
(void *)child_name->name, child_name->len, ATTR_PARENT);
}
+/*
+ * Remove a parent record from a child inode.
+ */
+int
+xfs_parent_remove(
+ struct xfs_trans *tp,
+ struct xfs_inode *parent,
+ struct xfs_inode *child,
+ xfs_dir2_dataptr_t diroffset,
+ struct xfs_defer_ops *dfops,
+ xfs_fsblock_t *firstblock)
+{
+ struct xfs_parent_name_rec rec;
+
+ xfs_init_parent_name_rec(&rec, parent->i_ino,
+ VFS_I(parent)->i_generation, diroffset);
+
+ return xfs_attr_remove_deferred(child, dfops, &rec, sizeof(rec),
+ ATTR_PARENT);
+}
diff --git a/fs/xfs/xfs_attr.h b/fs/xfs/xfs_attr.h
index 09ef747..0829687 100644
--- a/fs/xfs/xfs_attr.h
+++ b/fs/xfs/xfs_attr.h
@@ -198,4 +198,8 @@ int xfs_parent_add(struct xfs_trans *tp, struct xfs_inode *parent,
struct xfs_inode *child, struct xfs_name *child_name,
xfs_dir2_dataptr_t diroffset, struct xfs_defer_ops *dfops,
xfs_fsblock_t *firstblock);
+int xfs_parent_remove(struct xfs_trans *tp, struct xfs_inode *parent,
+ struct xfs_inode *child, xfs_dir2_dataptr_t diroffset,
+ struct xfs_defer_ops *dfops, xfs_fsblock_t *firstblock);
+
#endif /* __XFS_ATTR_H__ */
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 0ad843d..a289a40 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -2607,6 +2607,7 @@ xfs_remove(
struct xfs_defer_ops dfops;
xfs_fsblock_t first_block;
uint resblks;
+ uint32_t dir_offset;
trace_xfs_remove(dp, name);
@@ -2687,12 +2688,19 @@ xfs_remove(
xfs_defer_init(&dfops, &first_block);
error = xfs_dir_removename(tp, dp, name, ip->i_ino, &first_block,
- &dfops, resblks, NULL);
+ &dfops, resblks, &dir_offset);
if (error) {
ASSERT(error != -ENOENT);
goto out_bmap_cancel;
}
+ if (xfs_sb_version_hasparent(&mp->m_sb)) {
+ error = xfs_parent_remove(tp, dp, ip, dir_offset, &dfops,
+ &first_block);
+ if (error)
+ goto out_bmap_cancel;
+ }
+
/*
* If this is a synchronous mount, make sure that the
* remove transaction goes to disk before returning to
--
2.7.4
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