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SubjectRe: [PATCH 3/6] autofs/autofs4: move compat_ioctl handling into fs

On 06/07/2010, at 7:35 PM, Arnd Bergmann <> wrote:

> Well, the only use of the BKL in autofs4 is in the ioctl function. You
> can probably replace that trivially with a global mutex, but from a quick
> inspection, even that should not be needed: The only ioctl command in
> autofs4 that does not already seem to have adequate locking is
> autofs4_get_set_timeout, which is even easier to change and still harmless
> if you don't do it at all.

That's right of course.

Even this shouldn't be a problem as it is called by a single instance, per autofs mount, of the daemon only. A fair amount of effort has gone into trying to make the autofs4 module independent of the BKL over time. However I would still rather not do the change concurrently with the ioctl changes.


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