splice_socket becomes a wrapper around splice_socket_generic which takes a ubuf pointer to prepare for zerocopy notifications.
Signed-off-by: Joe Damato jdamato@fastly.com --- 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 <linux/socket.h> #include <linux/sched/signal.h>
+#include <net/sock.h> + #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)