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Re: VFS Module Autoloading
On Sat, Aug 30, 2008 at 01:34:43PM -0700, Stephen M. Rumble wrote:
> Hi all,
> In -current we now have kernel modules for most file systems, which
> are built and installed by default. In addition, the kernel
> automatically attempts to dynamically load the appropriate module if
> support is not already present. This is a good and useful feature.
> However, there are two (minor) problems with this: the base system
> defaults to the old LKM tools (modload, modstat, etc) and the
> modularised file systems aren't all well-tested.
> This isn't a big deal, but it violates the principle of least
> surprise, I think. If new-style modules aren't the default in terms of
> support tools being built, why should the kernel default to sucking
> them in, especially given that there's no explicit means of loading
> them via userland (new-style modload) or telling that they're been
> loaded (new-style modstat)?
> It's a very minor issue, but I'm wondering whether we should make the
> autoloading sysctlable and default it to off until LKMs are banished
> for good and we have better tested the modules themselves.
So, what needs to be done to get the new-style modload working? If
that is actively being worked on, I'd say that the default should be
left as-is. Disabling it sounds like a step backwards.
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