kmalloc with GFP_DMA, or get_free_pages!!!

["Jalajadevi Ganapathy" <jganapat@Storage.com>]

To allocate memory for DMA operations, i can use kmalloc (,,GFP_DMA.. ). In
which case I need to use get_free_pages? Both the above gives me the
contiguous memory. I understand that get_free_pages gives me in terms of
pages. So it would be more than the memory which i asked for. I am not sure
watz the exact difference between these two.

Could anyone plz lemme know about this?

Thanks
Jalaja


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