Hi,
I have a few doubts regarding VMA.
1. According to the vm_area_struct there is a reference to only 1
mm_struct ? So is a VMA ever shared between processes or is restricted
only to that process which owns it ?
2. If VMAs are not shared then how are shared memory implemented ?
3. If VMAs are not shared then how do processes share shared object
text regions ?
What are the advantages of the adress_space structure ?
There is a flag called VM_NONLINEAR . What is it used for ? What does
it mena when we say VMA is non-linear ? According to my understanding
a VMA is a linear adress region in the process's user address space.
Is this correct or wrong ?
Thanks & Regards,
Rajagopalan.
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