FW: About swapper_page_dir and processes' page directory

Hua Ji (hji@netscreen.com)
Fri, 18 May 2001 11:19:23 -0700



Folks,

Get a question today. Thanks in advance.

As we know, vmalloc and other memory allocation/de-allocation will
change/update
the swapper_page_dir maintain by the kernel.

I am wondering when/how the kernel synchronzie the change to user level
processes' page
directory entries from the 768th to the 1023th.

Those entries get copied from swapper_page_dir when a user process get
forked/created. Does the kernel
frequently update this information every time when the swapper_page_dir get
changed?

Regards,

Mike

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