Re: [PATCH 7/58] new helper: end_writeback()

[Al Viro <viro@ZenIV.linux.org.uk>]

On Wed, Jun 09, 2010 at 09:02:16AM -0400, Christoph Hellwig wrote:
> On Tue, Jun 08, 2010 at 11:16:02PM +0100, Al Viro wrote:
> > 
> > Essentially, the minimal variant of ->evict_inode().  It's
> > a trimmed-down clear_inode(), sans any fs callbacks.  Once
> > it returns we know that no async writeback will be happening;
> > every ->evict_inode() instance should do that once and do that
> > before doing anything ->write_inode() could interfere with
> > (e.g. freeing the on-disk inode).
> 
> Naming seems a bit unfortunate - this really sounds like something
> in page writeback.  In fact I'd almost bet we had a function with
> that name there in the past.
> 
> Care to slap an inode_ prefix on it?

Ehh...  I'd been tempted to call it end_async or something like that.
I'm not particulary fond of the name; any better suggestions are welcome.

The point of what's being done in that function is that it acts as a barrier;
"wait for async activity to run down; new one won't be started since it's
already marked I_FREEING".