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net/smc: fix up merge error with poll changes

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My networking merge (commit 4e33d7d47943: "Pull networking fixes from
David Miller") got the poll() handling conflict wrong for af_smc.

The conflict between my a11e1d432b ("Revert changes to convert to
->poll_mask() and aio IOCB_CMD_POLL") and Ursula Braun's 24ac3a08e6
("net/smc: rebuild nonblocking connect") should have left the call to
sock_poll_wait() in place, just without the socket lock release/retake.

And I really should have realized that.  But happily, I at least asked
Ursula to double-check the merge, and she set me right.

This also fixes an incidental whitespace issue nearby that annoyed me
while looking at this.

Pointed-out-by: Ursula Braun <ubraun@linux.ibm.com>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds 2018-07-03 09:53:43 -07:00
parent d0fbad0aec
commit 410da1e12f
1 changed files with 2 additions and 1 deletions
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3
net/smc/af_smc.c
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@ -1345,6 +1345,8 @@ static __poll_t smc_poll(struct file *file, struct socket *sock,
if (sk->sk_err)
mask |= EPOLLERR;
} else {
if (sk->sk_state != SMC_CLOSED)
sock_poll_wait(file, sk_sleep(sk), wait);
if (sk->sk_err)
mask |= EPOLLERR;
if ((sk->sk_shutdown == SHUTDOWN_MASK) ||
@ -1370,7 +1372,6 @@ static __poll_t smc_poll(struct file *file, struct socket *sock,
}
if (smc->conn.urg_state == SMC_URG_VALID)
mask |= EPOLLPRI;
}
return mask;