Say, I have a huge file which I want to load into memory. Is it possible to use the DMA to quickly load the data from the file into the memory in Linux? If so, how?
Is there a way to read a file into memory using DMA in Linux?
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If DMA is available then the driver is probably already using it. If you want high-speed direct access to a file then use
mmap(2)instead of second-guessing the OS.