>>>>> "Cabaniols" == Cabaniols, Sebastien <Sebastien.Cabaniols@Compaq.com> writes:
Cabaniols> When I do a fork, which part of the kernel is allocating the memory for
Cabaniols> the childs, where and when the memory copy takes place ?
mm/memory.c:copy_page_range()
It copies page tables and marks the ptes copy-on-write.
Cabaniols> I know that
Cabaniols> linux is doing copy on write but I don't know which part of the kernel
Cabaniols> is really doing the page allocation when the copy on write understands
Cabaniols> that the process really wants to write now. Then the second question is
Cabaniols> how is the memory copy done ?
mm/memory.c: handle_mm_fault()/handle_pte_fault() and do_wp_page()
Cabaniols> The third and last question is what is the role of the slab allocator ?
Cabaniols> When does a process asks for memory from a slab ? Is it used to build
Cabaniols> the stack the heap ?
Slab allocator is a memory allocation and caching mechanism for
(small) kernel objects. It is described in, e.g.,
http://nondot.org/sabre/os/files/MemManagement/SlabAllocator.pdf
Regards,
-velco
PS. You may also find help on irc.openprojects.net, #kernelnewbies
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This archive was generated by hypermail 2b29 : Thu Jan 31 2002 - 21:01:03 EST