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Message-Id: <1466453164-13185-3-git-send-email-dave@stgolabs.net>
Date: Mon, 20 Jun 2016 13:05:54 -0700
From: Davidlohr Bueso <dave@...olabs.net>
To: peterz@...radead.org, mingo@...nel.org
Cc: davem@...emloft.net, cw00.choi@...sung.com,
dougthompson@...ssion.com, bp@...en8.de, mchehab@....samsung.com,
gregkh@...uxfoundation.org, pfg@....com, jikos@...nel.org,
hans.verkuil@...co.com, awalls@...metrocast.net,
dledford@...hat.com, sean.hefty@...el.com, kys@...rosoft.com,
heiko.carstens@...ibm.com, James.Bottomley@...senPartnership.com,
sumit.semwal@...aro.org, schwidefsky@...ibm.com,
linux-kernel@...r.kernel.org, dave@...olabs.net,
Davidlohr Bueso <dbueso@...e.de>
Subject: [PATCH 02/12] net/neighbour: Employ atomic_fetch_inc()
Now that we have fetch_inc() we can stop using inc_return() - 1.
These are very similar to the existing OP-RETURN primitives we already
have, except they return the value of the atomic variable _before_
modification.
Cc: David S. Miller <davem@...emloft.net>
Signed-off-by: Davidlohr Bueso <dbueso@...e.de>
---
net/core/neighbour.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 29dd8cc22bbf..60e981a8735e 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -269,7 +269,7 @@ static struct neighbour *neigh_alloc(struct neigh_table *tbl, struct net_device
unsigned long now = jiffies;
int entries;
- entries = atomic_inc_return(&tbl->entries) - 1;
+ entries = atomic_fetch_inc(&tbl->entries);
if (entries >= tbl->gc_thresh3 ||
(entries >= tbl->gc_thresh2 &&
time_after(now, tbl->last_flush + 5 * HZ))) {
--
2.6.6
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