linux-kernel - [PATCH net-next v2 6/9] net: splice: Drop nr_pages

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Message-Id: <20250626-splice-drop-unused-v2-6-3268fac1af89@rbox.co>
Date: Thu, 26 Jun 2025 10:33:39 +0200
From: Michal Luczaj <mhal@...x.co>
To: "David S. Miller" <davem@...emloft.net>, 
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, 
 Paolo Abeni <pabeni@...hat.com>, Simon Horman <horms@...nel.org>, 
 Neal Cardwell <ncardwell@...gle.com>, Kuniyuki Iwashima <kuniyu@...gle.com>, 
 David Ahern <dsahern@...nel.org>, Boris Pismenny <borisp@...dia.com>, 
 John Fastabend <john.fastabend@...il.com>, 
 Ayush Sawal <ayush.sawal@...lsio.com>, Andrew Lunn <andrew+netdev@...n.ch>, 
 Wenjia Zhang <wenjia@...ux.ibm.com>, Jan Karcher <jaka@...ux.ibm.com>, 
 "D. Wythe" <alibuda@...ux.alibaba.com>, Tony Lu <tonylu@...ux.alibaba.com>, 
 Wen Gu <guwen@...ux.alibaba.com>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-rdma@...r.kernel.org, linux-s390@...r.kernel.org, 
 Michal Luczaj <mhal@...x.co>
Subject: [PATCH net-next v2 6/9] net: splice: Drop nr_pages_max
 initialization

splice_pipe_desc::nr_pages_max was initialized unnecessarily in commit
41c73a0d44c9 ("net: speedup skb_splice_bits()"). spd_fill_page() compares
spd->nr_pages against a constant MAX_SKB_FRAGS, which makes setting
nr_pages_max redundant.

Remove the assignment. No functional change intended.

Reviewed-by: Simon Horman <horms@...nel.org>
Signed-off-by: Michal Luczaj <mhal@...x.co>
---
 net/core/skbuff.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index c381a097aa6e087d1b5934f2d193a896a255bf83..b4f7843430a3f8f84aed387bf41ae761d97687ad 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -3188,7 +3188,6 @@ int skb_splice_bits(struct sk_buff *skb, struct sock *sk, unsigned int offset,
 	struct splice_pipe_desc spd = {
 		.pages = pages,
 		.partial = partial,
-		.nr_pages_max = MAX_SKB_FRAGS,
 		.ops = &nosteal_pipe_buf_ops,
 		.spd_release = sock_spd_release,
 	};

-- 
2.49.0