From mboxrd@z Thu Jan 1 00:00:00 1970 From: Divy Le Ray Subject: [PATCH 2.6.32] cxgb3: fix premature page unmap Date: Tue, 17 Nov 2009 18:38:28 -0800 Message-ID: <20091118023828.16411.57681.stgit@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, swise@opengridcomputing.com To: davem@davemloft.net Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: Divy Le Ray unmap Rx page only when guaranteed that this page won't be used anymore to allocate rx page chunks. Signed-off-by: Divy Le Ray --- drivers/net/cxgb3/sge.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/cxgb3/sge.c b/drivers/net/cxgb3/sge.c index f866128..6366061 100644 --- a/drivers/net/cxgb3/sge.c +++ b/drivers/net/cxgb3/sge.c @@ -879,7 +879,7 @@ recycle: pci_dma_sync_single_for_cpu(adap->pdev, dma_addr, len, PCI_DMA_FROMDEVICE); (*sd->pg_chunk.p_cnt)--; - if (!*sd->pg_chunk.p_cnt) + if (!*sd->pg_chunk.p_cnt && sd->pg_chunk.page != fl->pg_chunk.page) pci_unmap_page(adap->pdev, sd->pg_chunk.mapping, fl->alloc_size, @@ -2088,7 +2088,7 @@ static void lro_add_page(struct adapter *adap, struct sge_qset *qs, PCI_DMA_FROMDEVICE); (*sd->pg_chunk.p_cnt)--; - if (!*sd->pg_chunk.p_cnt) + if (!*sd->pg_chunk.p_cnt && sd->pg_chunk.page != fl->pg_chunk.page) pci_unmap_page(adap->pdev, sd->pg_chunk.mapping, fl->alloc_size,