Category "mmap"

Question about sharing mmapped area between 2 different processes

I'm trying to share mmapped area in 2 processes. In my program, I create memory_update() process and memory_read() process. This memory_update() process update

Does mmap changes flags stored in the page table?

To the best of my knowledge, MMAP can be used to change a protection of mapped memory region. For example, If I want to add executable permission to one of m