[RFC PATCH 09/11] pipe: Remove redundant wakeup from pipe_write() [ver #3]

From: David Howells
Date: Fri Nov 01 2019 - 13:35:37 EST


Remove a redundant wakeup from pipe_write().

Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
---

fs/pipe.c | 5 -----
1 file changed, 5 deletions(-)

diff --git a/fs/pipe.c b/fs/pipe.c
index ce77ac0d8901..d7b8d3f22987 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -517,11 +517,6 @@ pipe_write(struct kiocb *iocb, struct iov_iter *from)
ret = -ERESTARTSYS;
break;
}
- if (do_wakeup) {
- wake_up_interruptible_sync_poll(&pipe->wait, EPOLLIN | EPOLLRDNORM);
- kill_fasync(&pipe->fasync_readers, SIGIO, POLL_IN);
- do_wakeup = 0;
- }
pipe->waiting_writers++;
pipe_wait(pipe);
pipe->waiting_writers--;