On Mon, 12 Jan 2015 11:01:06 -0600, riya khanna said: > With shared memory mappings, once A and B both map the same memory > address/file they see the same contents > A [0xaaaaaaaa] - maps - to -> [0xAAAAAAAA] > B [0xbbbbbbbb] - maps - to -> [0xAAAAAAAA] > > However, if A changes (update) the mappings to point to a different > memory area/file offset, B sees different contents > A [0xaaaaaaaa] - maps - to -> [0xBBBBBBBB]
Well, don't do that then. Or have A notify B via some sort of IPC that it's done it so B can update its mappings. I'm not seeing a need for kernel support for poorly designed userspace code.
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