Hi all,
Sorry for mailing this again, the first
mail was showing garbage, so I tried again.
I am working with an application which needed the
duplication of network stacks in the kernel.
So for each such application I have a independent
network stack module in the kernel, compiled as a
group of .o files. (The .o files from
linux-2.4/net/ipv4 and linux-2.4/net/core)
Whenever the application dies, I just delete the
module after freeing the pages allocated by the
module.
(So basically I have a written a module which keeps
accounting for each page allocated by that network
stack module)
This used to work fine in 2.2 network stack.
Now I used 2.4.20-13.9.
What I observe is that after the network stack is used
for some time, it sets the page->mapping of some of
the pages allocated by it.
I beleive that it should not do it, as it uses the
pages for maintaining hashes only.
Now the problem I faced due to this is that, whenever
my application dies.
I try to free the pages allocated by its network
stack, but as some of the pages have page->mapping
set, hance it leads to BUG in __free_pages_ok.
Can anybody please advise me, that how can I free
those pages, because I need to free all pages of
network stack module before I delete it.
Any pointers of help will be highly appreciated.
TIA
Siddharth
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