linux-kernel - [PATCH] NFS: Replace one-element array with flexible-array member

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Date:   Fri, 14 Jan 2022 00:57:33 +0000
From:   cgel.zte@...il.com
To:     trond.myklebust@...merspace.com
Cc:     anna.schumaker@...app.com, linux-nfs@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Changcheng Deng <deng.changcheng@....com.cn>,
        Zeal Robot <zealci@....com.cn>
Subject: [PATCH] NFS: Replace one-element array with flexible-array member

From: Changcheng Deng <deng.changcheng@....com.cn>

There is a regular need in the kernel to provide a way to declare having
a dynamically sized set of trailing elements in a structure. Kernel code
should always use “flexible array members” for these cases. The older
style of one-element or zero-length arrays should no longer be used.

Reference:
https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-
and-one-element-arrays

Reported-by: Zeal Robot <zealci@....com.cn>
Signed-off-by: Changcheng Deng <deng.changcheng@....com.cn>
---
 include/linux/nfs_xdr.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 39390d9df9e1..7f51edd5785a 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -421,7 +421,7 @@ struct nfs42_layout_error {
 	__u64 offset;
 	__u64 length;
 	nfs4_stateid stateid;
-	struct nfs42_device_error errors[1];
+	struct nfs42_device_error errors[];
 };
 
 #define NFS42_LAYOUTERROR_MAX 5
-- 
2.25.1