Messages in this thread | | | Date | Mon, 7 Feb 2011 08:58:06 -0600 | Subject | Re: [V9fs-developer] [RFC PATCH -V2 0/17] Buffered write and writeable mmap support for 9P | From | Eric Van Hensbergen <> |
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On Sat, Feb 5, 2011 at 12:03 PM, Aneesh Kumar K. V <aneesh.kumar@linux.vnet.ibm.com> wrote: > On Sat, 5 Feb 2011 23:16:28 +0530, "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> wrote: >> The patch series implement buffered write and writeable mmap for 9P >> >> Changes from V1: >> a) Add fsync and syncfs support >> > > I haven't yet addressed the previous review feedback from > Miklos. http://article.gmane.org/gmane.linux.kernel/1093869 > Running 9p server and client on the same host even though possible > is not a strong use case at this point. I will get to that later. >
It is for a lot of the legacy cases including using 9p to access user-space file servers. Of course, there are some long standing issues with this for anything which re-exports the name space. Also - most user-space file servers on the same host wouldn't want cache support anyways.
> > The patch series also don't address cache consistency issue that > can arise due to direct modification in the server. I am not > sure we need to complicate the client code for that considering > the cache model that we follow is loose. >
Agreed, the loose cache model doesn't respect any consistency guarantees. Once we implement any of the more conventional cache policies we'll have to worry about it.
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