From: Patrick Caulfield <[EMAIL PROTECTED]>
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 <[EMAIL PROTECTED]>
Signed-off-by: Steven Whitehouse <[EMAIL PROTECTED]>
diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c
index 62a8a6c..58bf3f5 100644
--- a/fs/dlm/lowcomms.c
+++ b/fs/dlm/lowcomms.c
@@ -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;
--
1.5.1.2
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
