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XArray: Add private interface for workingset node deletion

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Move the tricky bits of dealing with the XArray from the workingset
code to the XArray.  Make it clear in the documentation that this is a
private interface, and only export it for the benefit of the test suite.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
This commit is contained in:
Matthew Wilcox (Oracle)
2020-08-18 09:05:56 -04:00
parent 8446466c9d
commit f82cd2f0b5
4 changed files with 28 additions and 17 deletions
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7
lib/test_xarray.c
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@@ -1600,14 +1600,9 @@ static noinline void shadow_remove(struct xarray *xa)
xa_lock(xa);
while ((node = list_first_entry_or_null(&shadow_nodes,
struct xa_node, private_list))) {
XA_STATE(xas, node->array, 0);
XA_BUG_ON(xa, node->array != xa);
list_del_init(&node->private_list);
xas.xa_node = xa_parent_locked(node->array, node);
xas.xa_offset = node->offset;
xas.xa_shift = node->shift + XA_CHUNK_SHIFT;
xas_set_update(&xas, test_update_node);
xas_store(&xas, NULL);
xa_delete_node(node, test_update_node);
}
xa_unlock(xa);
}