linux-kernel - [RFC -next 01/10] splice: Add ubuf

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Message-ID: <20250319001521.53249-2-jdamato@fastly.com>
Date: Wed, 19 Mar 2025 00:15:12 +0000
From: Joe Damato <jdamato@...tly.com>
To: netdev@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
	asml.silence@...il.com,
	linux-fsdevel@...r.kernel.org,
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	Joe Damato <jdamato@...tly.com>
Subject: [RFC -next 01/10] splice: Add ubuf_info to prepare for ZC

Update struct splice_desc to include ubuf_info to prepare splice for
zero copy notifications.

Signed-off-by: Joe Damato <jdamato@...tly.com>
---
 include/linux/splice.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/splice.h b/include/linux/splice.h
index 9dec4861d09f..7477df3916e2 100644
--- a/include/linux/splice.h
+++ b/include/linux/splice.h
@@ -10,6 +10,7 @@
 #define SPLICE_H
 
 #include <linux/pipe_fs_i.h>
+#include <linux/skbuff.h>
 
 /*
  * Flags passed in from splice/tee/vmsplice
@@ -43,6 +44,7 @@ struct splice_desc {
 	loff_t *opos;			/* sendfile: output position */
 	size_t num_spliced;		/* number of bytes already spliced */
 	bool need_wakeup;		/* need to wake up writer */
+	struct ubuf_info *ubuf_info;    /* zerocopy infrastructure */
 };
 
 struct partial_page {
-- 
2.43.0