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socket: do a generic_file_splice_read when proto_ops has no splice_read

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splice(2) fails with -EINVAL when called reading on a socket with no splice_read
set in its proto_ops (such as vsock sockets). Switch this to fallbacks to a
generic_file_splice_read instead.

Signed-off-by: Slavomir Kaslev <kaslevs@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Slavomir Kaslev 2018-11-16 11:27:53 +02:00 committed by David S. Miller
parent df5a8ec64e
commit 95506588d2
1 changed files with 1 additions and 1 deletions
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net/socket.c
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@ -853,7 +853,7 @@ static ssize_t sock_splice_read(struct file *file, loff_t *ppos,
struct socket *sock = file->private_data;
if (unlikely(!sock->ops->splice_read))
return -EINVAL;
return generic_file_splice_read(file, ppos, pipe, len, flags);
return sock->ops->splice_read(sock, ppos, pipe, len, flags);
}