filestream allocator rewrite

[Dave Chinner]

On Sat, Apr 12, 2014 at 10:01:54AM +0200, Christoph Hellwig wrote:
> This series is a major overhaul of the filestream allocator.  The main point
> is to use the dcache to get the parent and avoiding to maintain a fstrm_item
> for each inode that the filestream is applied to in favor of just tracking
> the parent, but there's various more or less related fallout from this as well.

OVerall it looks good. I'll need to do some testing on it and 
have a deeper look at the main use-the-dentry-cache patch, but it
removes a heap of complexity and code and gets rid of the use of
inode IO locks, so there's a loot to like here...

Cheers,

Dave.
-- 
Dave Chinner
david at fromorbit.com