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Tue, 18 Mar 2025 17:15:40 -0700 (PDT) From: Joe Damato To: netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org, asml.silence@gmail.com, linux-fsdevel@vger.kernel.org, edumazet@google.com, pabeni@redhat.com, horms@kernel.org, linux-api@vger.kernel.org, linux-arch@vger.kernel.org, viro@zeniv.linux.org.uk, jack@suse.cz, kuba@kernel.org, shuah@kernel.org, sdf@fomichev.me, mingo@redhat.com, arnd@arndb.de, brauner@kernel.org, akpm@linux-foundation.org, tglx@linutronix.de, jolsa@kernel.org, linux-kselftest@vger.kernel.org, Joe Damato Subject: [RFC -next 03/10] splice: Factor splice_socket into a helper Date: Wed, 19 Mar 2025 00:15:14 +0000 Message-ID: <20250319001521.53249-4-jdamato@fastly.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250319001521.53249-1-jdamato@fastly.com> References: <20250319001521.53249-1-jdamato@fastly.com> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 splice_socket becomes a wrapper around splice_socket_generic which takes a ubuf pointer to prepare for zerocopy notifications. Signed-off-by: Joe Damato --- fs/splice.c | 40 +++++++++++++++++++++++++--------------- 1 file changed, 25 insertions(+), 15 deletions(-) diff --git a/fs/splice.c b/fs/splice.c index 9575074a1296..1f27ce6d1c34 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -37,6 +37,8 @@ #include #include +#include + #include "internal.h" /* @@ -783,21 +785,10 @@ iter_file_splice_write(struct pipe_inode_info *pipe, struct file *out, EXPORT_SYMBOL(iter_file_splice_write); #ifdef CONFIG_NET -/** - * splice_to_socket - splice data from a pipe to a socket - * @pipe: pipe to splice from - * @out: socket to write to - * @ppos: position in @out - * @len: number of bytes to splice - * @flags: splice modifier flags - * - * Description: - * Will send @len bytes from the pipe to a network socket. No data copying - * is involved. - * - */ -ssize_t splice_to_socket(struct pipe_inode_info *pipe, struct file *out, - loff_t *ppos, size_t len, unsigned int flags) +static ssize_t splice_socket_generic(struct pipe_inode_info *pipe, + struct file *out, loff_t *ppos, + size_t len, unsigned int flags, + struct ubuf_info *ubuf_info) { struct socket *sock = sock_from_file(out); struct bio_vec bvec[16]; @@ -920,6 +911,25 @@ ssize_t splice_to_socket(struct pipe_inode_info *pipe, struct file *out, wakeup_pipe_writers(pipe); return spliced ?: ret; } + +/** + * splice_to_socket - splice data from a pipe to a socket + * @pipe: pipe to splice from + * @out: socket to write to + * @ppos: position in @out + * @len: number of bytes to splice + * @flags: splice modifier flags + * + * Description: + * Will send @len bytes from the pipe to a network socket. No data copying + * is involved. + * + */ +ssize_t splice_to_socket(struct pipe_inode_info *pipe, struct file *out, + loff_t *ppos, size_t len, unsigned int flags) +{ + return splice_socket_generic(pipe, out, ppos, len, flags, NULL); +} #endif static int warn_unsupported(struct file *file, const char *op)