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    SubjectRe: [PATCHSET driver-core-next] sysfs: separate out kernfs, take #3
    Hello,

    On Sun, Nov 24, 2013 at 01:16:02AM -0800, Christoph Hellwig wrote:
    > It would be highly useful if you could explain us what kernfs is
    > supposed to do and why we're cheerfully waiting for it. Also given

    Oops, sorry about that. It was explained in earlier series but I
    probably should carry on a simplified explanation on later ones too.
    It's just separating out the core features of sysfs into a separate
    filesystem so that it can be used by non-kobject based users too. So,
    kernfs implements the core pseudo file functionality and sysfs becomes
    kobject-wrapping layer on top of it. I'm gonna convert cgroup to use
    kernfs and Greg seems to have some plans for debugfs, IIUC.

    > that you touch VFS core files please Cc linux-fsdevel for those and
    > explain them in detail.

    Does it? Ah, okay, fs/Makefile and fs/namespace.c. The former is
    just adding kernfs/ directory and the latter is splitting out
    kernfs_init() from sysfs_init() call. Both are trivial. Will cc
    linux-fsdevel on those patches.

    Thanks.

    --
    tejun


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