linux-kernel - [PATCH 5/9] XArray: entry in last level is not expected to be a node

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Message-Id: <20200330123643.17120-6-richard.weiyang@gmail.com>
Date:   Mon, 30 Mar 2020 12:36:39 +0000
From:   Wei Yang <richard.weiyang@...il.com>
To:     willy@...radead.org
Cc:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        Wei Yang <richard.weiyang@...il.com>
Subject: [PATCH 5/9] XArray: entry in last level is not expected to be a node

If an entry is at the last level, whose parent's shift is 0, it is not
expected to be a node. We can just leverage the xa_is_node() check to
break the loop instead of check shift additionally.

Signed-off-by: Wei Yang <richard.weiyang@...il.com>
---
 lib/xarray.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/lib/xarray.c b/lib/xarray.c
index e08a0388a156..0c5b44def3aa 100644
--- a/lib/xarray.c
+++ b/lib/xarray.c
@@ -238,8 +238,6 @@ void *xas_load(struct xa_state *xas)
 		if (xas->xa_shift > node->shift)
 			break;
 		entry = xas_descend(xas, node);
-		if (node->shift == 0)
-			break;
 	}
 	return entry;
 }
-- 
2.23.0