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net: Make sock_splice_read() use copy_splice_read() by default 

Make sock_splice_read() use copy_splice_read() by default as
file_splice_read() will return immediately with 0 as a socket has no
pagecache and is a zero-size file.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: "David S. Miller" <davem@davemloft.net>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: Christoph Hellwig <hch@lst.de>
cc: Al Viro <viro@zeniv.linux.org.uk>
cc: Jens Axboe <axboe@kernel.dk>
cc: netdev@vger.kernel.org
cc: linux-block@vger.kernel.org
cc: linux-mm@kvack.org
Link: https://lore.kernel.org/r/20230522135018.2742245-14-dhowells@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
David Howells 2023-05-22 14:50:00 +01:00 committed by Jens Axboe
parent b0072734ff
commit 67178fd066
1 changed files with 1 additions and 1 deletions
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2
net/socket.c
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@ -1093,7 +1093,7 @@ 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 generic_file_splice_read(file, ppos, pipe, len, flags);
return copy_splice_read(file, ppos, pipe, len, flags);
return sock->ops->splice_read(sock, ppos, pipe, len, flags);
}