Re: [PATCH] tmpfs: support SEEK_DATA and SEEK_HOLE (reprise)

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On Thu, 29 Nov 2012 15:29:15 -0800 (PST)
Hugh Dickins <hughd@xxxxxxxxxx> wrote:

> On Thu, 29 Nov 2012, Andrew Morton wrote:
> > On Wed, 28 Nov 2012 17:22:03 -0800 (PST)
> > Hugh Dickins <hughd@xxxxxxxxxx> wrote:
> > 
> > > +/*
> > > + * llseek SEEK_DATA or SEEK_HOLE through the radix_tree.
> > > + */
> > > +static pgoff_t shmem_seek_hole_data(struct address_space *mapping,
> > > +				    pgoff_t index, pgoff_t end, int origin)
> > 
> > So I was starting at this wondering what on earth "origin" is and why
> > it has the fishy-in-this-context type "int".
> > 
> > There is a pretty well established convention that the lseek seek mode
> > is called "whence".
> > 
> > The below gets most of it.  Too anal?
> 
> No, not too anal: I'm all in favour of "whence", which is indeed
> the name of that lseek argument - since mediaeval times I believe.

Alas, the rest of us don't have personal memories from those days.

> It's good to have words like that in the kernel source: while you're
> in the mood, please see if you can find good homes for "whither" and
> "thrice" and "widdershins".

We use "thrice" quite a lot.  And "whither" once coz alfa peeps cnat spel. 
No widdershins yet.

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