From acc656323ab904803393acefdc8e1b78cde752e5 Mon Sep 17 00:00:00 2001 From: Akinobu Mita Date: Fri, 30 Mar 2012 01:01:46 +0000 Subject: [PATCH] rionet: fix page allocation order of rionet_active rionet_active is allocated from the page allocator and the allocation order is calculated on the assumption that the page size is 4KB, so it wastes memory on more than 4K page systems. Signed-off-by: Akinobu Mita Cc: Matt Porter Cc: Alexandre Bounine Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller --- drivers/net/rionet.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/net/rionet.c b/drivers/net/rionet.c index a57f05726b5..91d25888a1b 100644 --- a/drivers/net/rionet.c +++ b/drivers/net/rionet.c @@ -375,8 +375,8 @@ static void rionet_remove(struct rio_dev *rdev) struct net_device *ndev = rio_get_drvdata(rdev); struct rionet_peer *peer, *tmp; - free_pages((unsigned long)rionet_active, rdev->net->hport->sys_size ? - __fls(sizeof(void *)) + 4 : 0); + free_pages((unsigned long)rionet_active, get_order(sizeof(void *) * + RIO_MAX_ROUTE_ENTRIES(rdev->net->hport->sys_size))); unregister_netdev(ndev); free_netdev(ndev); @@ -432,15 +432,16 @@ static int rionet_setup_netdev(struct rio_mport *mport, struct net_device *ndev) int rc = 0; struct rionet_private *rnet; u16 device_id; + const size_t rionet_active_bytes = sizeof(void *) * + RIO_MAX_ROUTE_ENTRIES(mport->sys_size); rionet_active = (struct rio_dev **)__get_free_pages(GFP_KERNEL, - mport->sys_size ? __fls(sizeof(void *)) + 4 : 0); + get_order(rionet_active_bytes)); if (!rionet_active) { rc = -ENOMEM; goto out; } - memset((void *)rionet_active, 0, sizeof(void *) * - RIO_MAX_ROUTE_ENTRIES(mport->sys_size)); + memset((void *)rionet_active, 0, rionet_active_bytes); /* Set up private area */ rnet = netdev_priv(ndev); -- 2.39.5