Re: [PATCH 1/3] autofs4 - fix device ioctl mount lookup

From: Ian Kent
Date: Fri Sep 06 2013 - 04:54:33 EST



Sorry, I should have added Jeff to the cc for this post.

On Fri, 2013-09-06 at 16:38 +0800, Ian Kent wrote:
> On Wed, 2013-09-04 at 03:42 +0100, Al Viro wrote:
> > On Wed, Sep 04, 2013 at 03:26:17AM +0100, Al Viro wrote:
> > > I've applied slightly modified variant of Jeff's "vfs: allow umount to handle
> > > mountpoints without revalidating them" (modified by just leaving the
> > > struct path filled with mountpoint and leaving the equivalent of follow_mount()
> > > to caller) to the local queue and I'm pretty sure that it's what we want
> > > here as well.
> >
> > ... and killed the modifications since the result ends up uglier for
> > caller(s) anyway. Reapplied as-is.
>
> Looks like Jeff's patch has been merged, commit 8033426e6.
>
> Revalidation isn't the only thing not done on the last component using
> Jeff's user_path_umountat() path walk. It also bypasses the managed
> dentry code for the last component, which is why it's what I need as
> well.
>
> Encoding umount in the name seems misleading as to what it really does
> as would encoding unmanaged or similar since that doesn't properly cover
> it either.
>
> I can rename it in a patch to solve my autofs problem, so how about
> something like user_path_simple_last(), other suggestions anyone?
>
> Ian


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