Re: [PATCH 08/12] superblock: introduce per-sb cache shrinkerinfrastructure

From: Christoph Hellwig
Date: Sat Jun 04 2011 - 10:09:01 EST

On Sat, Jun 04, 2011 at 11:52:12AM +1000, Dave Chinner wrote:
> I wanted to put it early on in the unmount path so that the shrinker
> was guaranteed to be gone before evict_inodes() was called. That
> would mean that it is obviously safe to remove the iprune_sem
> serialisation in that function.

The iprune_sem removal is fine as soon as you have a per-sb shrinker
for the inodes which keeps an active reference on the superblock until
all the inodes are evicted.

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