RE: [SSI-devel] Re: get shared memory and user space talking
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From: Walker, B. J <bru...@hp...> - 2003-10-28 15:11:52
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The code for page-level tokens is there but not yet leveraged so you are correct that so far it is file level. Hopefully David will get a chance to correct that. Bruce > -----Original Message----- > From: Kumar, Aneesh (Digital GlobalSoft)=20 > Sent: Tuesday, October 28, 2003 6:41 AM > To: Walker, Bruce J > Cc: MAASK Group; fr...@ex...; ste...@ho...;=20 > ssi...@li... > Subject: Re: [SSI-devel] Re: get shared memory and user space talking >=20 >=20 > Walker, Bruce J (HP) wrote: >=20 > >If we used the token mechanism that the cluster filesystem=20 > CFS uses, the > >idea would be that, on a page level basis, any number of=20 > nodes can cache > >the page if they all need it r/o or a single node can cache=20 > it r/w. In > >that way one node can make many changes to the page while it=20 > is cached. > >The trick is working the mm to cache based on tokens and to=20 > relate the 2 > >memory images on the 2 nodes. =20 > > > >Bruce > > > > > > =20 > > >=20 >=20 > Last time i went through the code i remember the current=20 > implementation=20 > of token to be file based.( that's the entire file will be=20 > unmapped in=20 > case another node access the same mapping ) Am i missing something. ?=20 > Did david already made it page wise ? >=20 >=20 > -aneesh >=20 >=20 >=20 |