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Problems when using the framebuffer device directly

I am writing a program using the framebuffer device directly and I have three problems there. 1) The only way I can set the screen resolution correct is by passing the kernel option during boot: ...
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can not delete a file that has been memory mapped until all dirty pages are written

I am memory mapping files from java which wraps the mmap kernel function, it all works fine except that when I close my program down and try to delete the memory mapped file the delete hangs for ages ...
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What is the mechanism/system call used to change the size of anonymos mmap() 'ed sections

I have a question about how to track down the source of steadily increasing data footprint of a process in Linux. I have a multi-threaded Linux server, and I am observing that the size of an ...