Besides kmalloc() is more efficient, are there some potential problems that I should be aware of if I allocate the memory which doesn't have any relation to peripheral hardwares(i.e. DMA,PCI,serial port and etc) by vmalloc() instead of kmalloc() to avoid the page allocation failure?

[孙世龙 sunshilong]

Hi, list

Besides kmalloc() is more efficient, are there some potential problems that
I should be aware of if I allocate the memory which doesn't have any
relation to peripheral hardwares(i.e. DMA,PCI,serial port and etc) by
vmalloc() instead of kmalloc() to avoid the page allocation failure(caused
by kmalloc() while there are too much memory fragment)?

Thank you for your attention to this matter.
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