Tomasz, On Mon, Mar 23, 2015 at 12:27 AM, Tomasz Figa <tf...@chromium.org> wrote: > IOMMU should be able to use single pages as well as bigger blocks, so if > higher order allocations fail, we should not affect state of the system, > with events such as OOM killer, but rather fall back to order 0 > allocations. > > This patch changes the behavior of ARM IOMMU DMA allocator to use > __GFP_NORETRY, which bypasses OOM invocation, for orders higher than > zero and, only if that fails, fall back to normal order 0 allocation > which might invoke OOM killer. > > Signed-off-by: Tomasz Figa <tf...@chromium.org> > --- > arch/arm/mm/dma-mapping.c | 27 +++++++++++++++++++++------ > 1 file changed, 21 insertions(+), 6 deletions(-)
FWIW: Reviewed-by: Doug Anderson <diand...@chromium.org> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
