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    SubjectRe: [RFC PATCH -V1 0/7] Buffered write and writeable mmap support for 9P
    On Mon, 31 Jan 2011 10:38:10 +0100, Miklos Szeredi <> wrote:
    > On Sun, 30 Jan 2011, Aneesh Kumar K.V wrote:
    > > The patch series implement buffered write and writeable mmap for 9P
    > P9 is supposed to work with servers on the local machine, right?


    > In that case you need to think about various deadlock scenarios. An
    > example: the P9 server needs a large order allocation while serving
    > the buffered write request. That may trigger the page reclaim and go
    > into synchronous writeback, possibly waiting on the exact page which
    > the P9 server is just trying to finish writing out.
    > This is not easy to deal with, see commit 3be5a52b for the fuse
    > solution. I'm not saying it's the only way, there may be a better
    > one.

    Thanks for the commit info. I will look at the details and see how best
    we can solve this in 9P


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