Messages in this thread | | | Subject | on the concept of COW | From | Jagadeesh Bhaskar P <> | Date | Sat, 20 Nov 2004 16:08:21 +0530 |
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Hi,
When a process forks, every resource of the parent, including the virtual memory is copied to the child process. The copying of VM uses copy-on-write(COW). I know that COW comes when a write request comes, and then the copy is made. Now my query follows:
How will the copy be distributed. Whether giving the child process a new copy of VM be permanent or whether they will be merged anywhere? And shouldn't the operations/updations by one process be visible to the other which inherited the copy of the same VM?
How can this work? Can someone please help me on this regard?
-- With regards,
Jagadeesh Bhaskar P R&D Engineer HCL Infosystems Ltd Pondicherry INDIA
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