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| author | Christoph Hellwig <hch@lst.de> | 2018-07-30 09:42:12 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-07-30 09:10:25 -0700 |
| commit | f641f13b992979b97e595b761a9ba1a64fed7c4e (patch) | |
| tree | 23ab66f8ce6811a02afb80d3bc0e71663e044a8a /net/socket.c | |
| parent | d8bbd13beeaacd6494954bf5b945b54ccb2af309 (diff) | |
| download | linux-f641f13b992979b97e595b761a9ba1a64fed7c4e.tar.gz linux-f641f13b992979b97e595b761a9ba1a64fed7c4e.tar.bz2 linux-f641f13b992979b97e595b761a9ba1a64fed7c4e.zip | |
net: remove sock_poll_busy_loop
There is no point in hiding this logic in a helper. Also remove the
useless events != 0 check and only busy loop once we know we actually
have a poll method.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/socket.c')
| -rw-r--r-- | net/socket.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/socket.c b/net/socket.c index 85633622c94d..674434127b3a 100644 --- a/net/socket.c +++ b/net/socket.c @@ -1132,9 +1132,12 @@ static __poll_t sock_poll(struct file *file, poll_table *wait) struct socket *sock = file->private_data; __poll_t events = poll_requested_events(wait); - sock_poll_busy_loop(sock, events); if (!sock->ops->poll) return 0; + + /* poll once if requested by the syscall */ + if (sk_can_busy_loop(sock->sk) && (events & POLL_BUSY_LOOP)) + sk_busy_loop(sock->sk, 1); return sock->ops->poll(file, sock, wait) | sock_poll_busy_flag(sock); } |