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    SubjectRe: [RFC] fsblock
    On Mon, Jun 25, 2007 at 08:25:21AM -0400, Chris Mason wrote:
    > > write_begin/write_end is a step in that direction (and it helps
    > > OCFS and GFS quite a bit). I think there is also not much reason
    > > for writepage sites to require the page to lock the page and clear
    > > the dirty bit themselves (which has seems ugly to me).
    >
    > If we keep the page mapping information with the page all the time (ie
    > writepage doesn't have to call get_block ever), it may be possible to
    > avoid sending down a locked page. But, I don't know the delayed
    > allocation internals well enough to say for sure if that is true.

    The point of delayed allocations is that the mapping information doesn't
    even exist until writepage for new allocations :)
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