We don't support large entries which expand two more level xa_node in
split. For case "xas->xa_shift + 2 * XA_CHUNK_SHIFT == order", we also
need two level of xa_node to expand. Distinguish entry as large entry in
case "xas->xa_shift + 2 * XA_CHUNK_SHIFT == order".
Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
---
lib/xarray.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/xarray.c b/lib/xarray.c
index fa87949719a0..b9fd321a02ad 100644
--- a/lib/xarray.c
+++ b/lib/xarray.c
@@ -1022,7 +1022,7 @@ void xas_split_alloc(struct xa_state *xas, void *entry, unsigned int order,
unsigned int mask = xas->xa_sibs;
/* XXX: no support for splitting really large entries yet */
- if (WARN_ON(xas->xa_shift + 2 * XA_CHUNK_SHIFT < order))
+ if (WARN_ON(xas->xa_shift + 2 * XA_CHUNK_SHIFT <= order))
goto nomem;
if (xas->xa_shift + XA_CHUNK_SHIFT > order)
return;
--
2.30.0