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    SubjectRe: [Lsf-pc] [LSF/MM TOPIC] really large storage sectors - going beyond 4096 bytes
    On Tue, Jan 21, 2014 at 10:04:29PM -0500, Ric Wheeler wrote:
    > One topic that has been lurking forever at the edges is the current
    > 4k limitation for file system block sizes. Some devices in
    > production today and others coming soon have larger sectors and it
    > would be interesting to see if it is time to poke at this topic
    > again.
    >

    Large block support was proposed years ago by Christoph Lameter
    (http://lwn.net/Articles/232757/). I think I was just getting started
    in the community at the time so I do not recall any of the details. I do
    believe it motivated an alternative by Nick Piggin called fsblock though
    (http://lwn.net/Articles/321390/). At the very least it would be nice to
    know why neither were never merged for those of us that were not around
    at the time and who may not have the chance to dive through mailing list
    archives between now and March.

    FWIW, I would expect that a show-stopper for any proposal is requiring
    high-order allocations to succeed for the system to behave correctly.

    --
    Mel Gorman
    SUSE Labs


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