Async hazard: MMAP is blocking IO

Re:Async hazard: MMAP is blocking IO by gpderetta on Sunday August 25, 2024 @03:30PM (#41350493)

Normal syscalls also "leverage hardware support for trapping into the kernel". Mmap is usually used because it is a simple way to do 0-copy disk I/O.

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Re:Async hazard: MMAP is blocking IO by a-dub on Tuesday August 27, 2024 @10:27AM (#41367925)

i can't think of any other syscall that makes use of tlb caches and page fault machinery to enter the kernel as needed in response to ordinary user space memory access.

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