Commit d66f8277 authored Sep 14, 2007 by Patrick Caulfield Committed by Steven Whitehouse Oct 10, 2007

[DLM] Make dlm_sendd cond_resched more



Under high recovery loads dlm_sendd can monopolise the CPU and cause soft lockups.

This one extra and one moved cond_resched() make it yield a little more during
such times keeping work moving.

Signed-Off-By: Patrick Caulfield <pcaulfie@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

parent 49e61f2e

fs/dlm/lowcomms.c

+4 −3

Original line number	Diff line number	Diff line
		@@ -1264,14 +1264,15 @@ static void send_to_sock(struct connection *con)
		if (len) {
		ret = sendpage(con->sock, e->page, offset, len,
		msg_flags);
		if (ret == -EAGAIN \|\| ret == 0)
		if (ret == -EAGAIN \|\| ret == 0) {
		cond_resched();
		goto out;
		}
		if (ret <= 0)
		goto send_error;
		} else {
		}
		/* Don't starve people filling buffers */
		cond_resched();
		}

		spin_lock(&con->writequeue_lock);
		e->offset += ret;