From: Ben Hutchings <bhutchings@solarflare.com>
Date: Fri, 10 Sep 2010 06:41:26 +0000 (+0000)
Subject: sfc: Allocate DMA and event rings using GFP_KERNEL
X-Git-Tag: v2.6.37-rc1~147^2~480
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=58758aa505edc5b8f8393cee45b54c7485d76de5;p=pandora-kernel.git

sfc: Allocate DMA and event rings using GFP_KERNEL

Currently we allocate DMA descriptor rings and event rings using
pci_alloc_consistent() which selects non-blocking behaviour from the
page allocator (GFP_ATOMIC). This is unnecessary, and since we
currently allocate a single contiguous block for each ring (up to 32
pages!) these allocations are likely to fail if there is any
significant memory pressure.  Use dma_alloc_coherent() and GFP_KERNEL
instead.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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