[lkml]   [2009]   [Mar]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: Linux 2.6.29
    On Wed, Mar 25, 2009 at 10:51 PM, Jeff Garzik <> wrote:
    > Then you have just reinvented the transactional userspace API that people
    > often want to replace POSIX API with.  Maybe one day they will succeed.
    > But "POSIX API replacement" is an area never short of proposals... :)

    Well, I think the goal is not to *replace* the POSIX API or even
    provide "transactional" guarantees. The performance penalty for
    atomic transactions is pretty high, and most programs (like GIT) don't
    really give a damn, as they provide that on a higher level.

    It's like the difference between a modern SMP system that supports
    memory barriers and write snooping and one of the theoretical
    "transactional memory" designs that have never caught on.

    To be honest I think we could provide much better data consistency
    guarantees and remove a lot of fsync() calls with just a basic
    per-filesystem barrier() call.

    Kyle Moffett
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    More majordomo info at
    Please read the FAQ at

     \ /
      Last update: 2009-03-26 04:05    [W:0.018 / U:12.212 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site