From d8e93e3f22d9fd2e6a3ccae3623c3af8789ccfc0 Mon Sep 17 00:00:00 2001 From: "Matthew Wilcox (Oracle)" Date: Thu, 27 Feb 2020 07:37:40 -0500 Subject: [PATCH] XArray: Optimise xas_sibling() if !CONFIG_XARRAY_MULTI If CONFIG_XARRAY_MULTI is disabled, then xas_sibling() must be false. Reported-by: JaeJoon Jung Signed-off-by: Matthew Wilcox (Oracle) --- lib/xarray.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/xarray.c b/lib/xarray.c index 05324cf..f448bcd 100644 --- a/lib/xarray.c +++ b/lib/xarray.c @@ -1836,7 +1836,7 @@ static bool xas_sibling(struct xa_state *xas) struct xa_node *node = xas->xa_node; unsigned long mask; - if (!node) + if (!IS_ENABLED(CONFIG_XARRAY_MULTI) || !node) return false; mask = (XA_CHUNK_SIZE << node->shift) - 1; return (xas->xa_index & mask) > -- 2.7.4