Commit 04e9e9bb authored by Matthew Wilcox (Oracle)'s avatar Matthew Wilcox (Oracle)
Browse files

XArray: Test marked multiorder iterations 



Demonstrate that starting a marked iteration partway through a marked
multi-order entry works.

Signed-off-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
parent 062b7359

lib/test_xarray.c

+22 −0
Original line number Diff line number Diff line
@@ -289,6 +289,27 @@ static noinline void check_xa_mark_2(struct xarray *xa) 
	xa_destroy(xa);

}



static noinline void check_xa_mark_3(struct xarray *xa)

{

#ifdef CONFIG_XARRAY_MULTI

	XA_STATE(xas, xa, 0x41);

	void *entry;

	int count = 0;



	xa_store_order(xa, 0x40, 2, xa_mk_index(0x40), GFP_KERNEL);

	xa_set_mark(xa, 0x41, XA_MARK_0);



	rcu_read_lock();

	xas_for_each_marked(&xas, entry, ULONG_MAX, XA_MARK_0) {

		count++;

		XA_BUG_ON(xa, entry != xa_mk_index(0x40));

	}

	XA_BUG_ON(xa, count != 1);

	rcu_read_unlock();

	xa_destroy(xa);

#endif

}



static noinline void check_xa_mark(struct xarray *xa)

{

	unsigned long index;
@@ -297,6 +318,7 @@ static noinline void check_xa_mark(struct xarray *xa) 
		check_xa_mark_1(xa, index);



	check_xa_mark_2(xa);

	check_xa_mark_3(xa);

}



static noinline void check_xa_shrink(struct xarray *xa)