Andy Isaacson wrote:
That said, I think I like the idea of MAP_NOZERO. Could it be
generalized to some kind of "free pool" rather than keyed off of uid?
Good idea. At exec() time the new mm can inherit the "free pool"
pointer that the parent process points to, when nothing changes.
Certain events can cause a process to need another "free pool",
for example changing the UID, changing security context or
changing CPU/NUMA node binding.
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