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    SubjectRe: [PATCH] 2.6.11-mm1 "nobh" support for ext3 writeback mode
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    On Fri, 2005-03-04 at 16:45, Andrew Morton wrote:
    > Badari Pulavarty <pbadari@us.ibm.com> wrote:
    > >
    > > > What's all this doing? (It needs comments please - it's very unobvious).
    > >
    > > All its trying to do is - to make sure the page is uptodate so that
    > > it can zero out the portion thats needed.
    >
    > OK.
    >
    > > I can do getblock() and ll_rw_block(READ) instead. I was
    > > trying to re-use the code and mpage_readpage() drops the lock.
    > > What do you think ?
    >
    > Can you just call ->prepare_write, as nobh_truncate_page() does? That'll
    > cause a nested transaction, but that's legal.
    >

    Thats what I tried earlier, but never got it working. Lots of journal
    asserts :(

    I guess I really need to learn journaling code someday.

    Thanks,
    Badari

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