Re: How can we use TUX atoms' framework to query file caching file status?

On Tue, 9 Apr 2002, Liang Yang wrote:

> You say we can use TUX atoms' framework
> to query file caching status, can you give us
> a little bit more information  about atoms' frame
> work? 

it's a bit complex, kernel internal stuff. I'd rather suggest for you to
extend the GET_OBJECT call to be 'atomic' if the module requests so. Just
return immediately with something like -EWOULDBLOCKIO if the path_walk [in
GET_OBJECT] does not succeed, and detect tihs -EWOULDBLOCKIO condition in
the tux() call you do from the module. This should be the simplest
solution for your purposes, a matter of a few minutes hacking.

you can later on extend this with 'if the path_walk succeeded then also
check for pagecache fill status and return -EWOULDBLOCKIO if the pagecache
is not sufficiently filled' type of heuristics we talked about earlier.

	Ingo