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    SubjectRe: [PATCH v2 0/4] do not use s_dirt in ext4
    Hi Ted,

    the merge window is about to open and I am getting worried about this
    patch-set - I won't have time to fix it if you indicate an issue...

    On Mon, 2012-04-02 at 14:45 +0300, Artem Bityutskiy wrote:
    > This patch-set makes ext4 independent of the VFS superblock management
    > services. Namely, ext4 does not require to register the 'write_super()' VFS
    > call-back.
    > The reason of this exercises is to get rid of the 'sync_supers()' kernel thread
    > which wakes up every 5 seconds (by default) even if all superblocks are clean.
    > This is wasteful from power management POW (unnecessary wake-ups).
    > Version 1 of this patch-set can be found here:
    > Changes between v1 and v2.
    > * Rake different strategy - instead of pushing 's_dirt' down "as-is" and
    > emulating old behavior, we now just submit the superblock for writing
    > straight away, either via the journal or directly. Thank to Jan Kara
    > for helping with this.
    > * Ted picked some of the patches already, which made this series shorter
    > - thanks!
    > * This time I've tested the changes using xfstests.
    > * Rebased to 3.4-rc1.
    > Note: Ted, you merged the "mm: export dirty_writeback_interval", but it looks
    > like we won't need this for ext[23]. However, for other file-systems we will
    > need this change.
    > Thanks,
    > Artem.

    Best Regards,
    Artem Bityutskiy
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