radix tree: Remove radix_tree_clear_tags

The page cache was the only user of this interface and it has now
been converted to the XArray.  Transform the test into a test of
xas_init_marks().

Signed-off-by: Matthew Wilcox <willy@infradead.org>

1 files changed, 40 insertions, 0 deletions

diff --git a/lib/test_xarray.c b/lib/test_xarray.c
index 815daffdd8c9..ca86141641cb 100644
--- a/lib/test_xarray.c
+++ b/lib/test_xarray.c
@@ -213,12 +213,52 @@ static noinline void check_xa_mark_1(struct xarray *xa, unsigned long index)
         XA_BUG_ON(xa, !xa_empty(xa));
 }
 
+static noinline void check_xa_mark_2(struct xarray *xa)
+{
+        XA_STATE(xas, xa, 0);
+        unsigned long index;
+        unsigned int count = 0;
+        void *entry;
+
+        xa_store_index(xa, 0, GFP_KERNEL);
+        xa_set_mark(xa, 0, XA_MARK_0);
+        xas_lock(&xas);
+        xas_load(&xas);
+        xas_init_marks(&xas);
+        xas_unlock(&xas);
+        XA_BUG_ON(xa, !xa_get_mark(xa, 0, XA_MARK_0) == 0);
+
+        for (index = 3500; index < 4500; index++) {
+                xa_store_index(xa, index, GFP_KERNEL);
+                xa_set_mark(xa, index, XA_MARK_0);
+        }
+
+        xas_reset(&xas);
+        rcu_read_lock();
+        xas_for_each_marked(&xas, entry, ULONG_MAX, XA_MARK_0)
+                count++;
+        rcu_read_unlock();
+        XA_BUG_ON(xa, count != 1000);
+
+        xas_lock(&xas);
+        xas_for_each(&xas, entry, ULONG_MAX) {
+                xas_init_marks(&xas);
+                XA_BUG_ON(xa, !xa_get_mark(xa, xas.xa_index, XA_MARK_0));
+                XA_BUG_ON(xa, !xas_get_mark(&xas, XA_MARK_0));
+        }
+        xas_unlock(&xas);
+
+        xa_destroy(xa);
+}
+
 static noinline void check_xa_mark(struct xarray *xa)
 {
         unsigned long index;
 
         for (index = 0; index < 16384; index += 4)
                 check_xa_mark_1(xa, index);
+
+        check_xa_mark_2(xa);
 }
 
 static noinline void check_xa_shrink(struct xarray *xa)