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    SubjectRe: [GIT] Bcache version 12
    On Mon, Sep 19, 2011 at 10:28:03AM +0300, Pekka Enberg wrote:
    > Hi Kent,
    >
    > On Sat, Sep 10, 2011 at 9:45 AM, Kent Overstreet
    > <kent.overstreet@gmail.com> wrote:
    > > bcache, n.: a cache for arbitrary block devices that uses an SSD
    > >
    > > It's probably past time I started poking people to see about getting
    > > this stuff in. It's synced up with mainline, the documentation is for
    > > once relatively up to date, and it looks just about production ready.
    > >
    > > Suggestions are more than welcome on how to make it easier to review -
    > > it's entirely too much code, I know (near 10k lines now). I'll be
    > > emailing the patches that touch other parts of the kernel separately.
    > >
    > > Short overview:
    > > Bcache does both writethrough and writeback caching. It presents itself
    > > as a new block device, a bit like say md. You can cache an arbitrary
    > > number of block devices with a single cache device, and attach and
    > > detach things at runtime - it's quite flexible.
    >
    > The changelog is pretty useless for people like myself who have never
    > heard of bcache before because it lacks any explanation why bcache is
    > useful (i.e. a real-world use case).
    >
    > Pekka

    Well, I think you'll want the documentation for that -
    Documentation/bcache.txt is somewhat up to date and should answer that
    decently.

    Short version: bcache is for making IO faster.


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