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    SubjectRe: [PATCH 4/4] parse options in the vfs level
    On 08/02/2011 11:18 AM, Al Viro wrote:
    > On Tue, Aug 02, 2011 at 10:04:06AM -0300, Glauber Costa wrote:
    >> I am not sure either, but I still believe my proposal is superior to
    >> write-to-a-file specifically. Writing to a file, be it in proc, sys,
    >> or wherever, leaves a window of opportunity open between mounting a
    >> filesystem and limiting its caches. Doing it on mount is atomic.
    >> Effectively, I see this limit as a property of a particular instance
    >> of a mounted filesystem. Since all properties of a filesystem are
    >> specified during mount, this becomes a natural extension.
    > The trouble is, dentry tree is fundamentally a property of superblock.
    > It's shared between *all* instances of that fs in all mount trees...

    And how is it different from any fs-specific options, like the ones extX
    have, for instance ? Many of them seem to operate on a superblock.

    If you mount a superblock somewhere, you can tweak specifics about its
    operation. If you mount it somewhere else, the assumption is you know
    what you're doing.

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      Last update: 2011-08-02 16:47    [W:0.019 / U:4.780 seconds]
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