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Message-ID: <20091118023828.16411.57681.stgit@localhost.localdomain> Date: Tue, 17 Nov 2009 18:38:28 -0800 From: Divy Le Ray <divy@...lsio.com> To: davem@...emloft.net Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, swise@...ngridcomputing.com Subject: [PATCH 2.6.32] cxgb3: fix premature page unmap From: Divy Le Ray <divy@...lsio.com> 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 <divy@...lsio.com> --- 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, -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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