From ce47f52f42e69d48d1b63fa618fce9cd7ffa9417 Mon Sep 17 00:00:00 2001 From: Andy Grover Date: Thu, 15 Apr 2010 17:19:29 -0700 Subject: [PATCH] RDS: Update comments in rds_send_xmit() Update comments to reflect changes in previous commit. Keeping as separate commits due to different authorship. Signed-off-by: Andy Grover --- net/rds/send.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/net/rds/send.c b/net/rds/send.c index 663fd60b40cf..8e3fd9981c2e 100644 --- a/net/rds/send.c +++ b/net/rds/send.c @@ -353,15 +353,14 @@ int rds_send_xmit(struct rds_connection *conn) /* * Other senders will see we have c_send_lock and exit. We * need to recheck the send queue and race again for c_send_lock - * to make sure messages don't just sit on the send queue. + * to make sure messages don't just sit on the send queue, if + * somebody hasn't already beat us into the loop. * * If the transport cannot continue (i.e ret != 0), then it must * call us when more room is available, such as from the tx * completion handler. */ if (ret == 0) { - /* A simple bit test would be way faster than taking the - * spin lock */ smp_mb(); if (!list_empty(&conn->c_send_queue)) { rds_stats_inc(s_send_lock_queue_raced);