Re: [PATCH] bcache: Fix a shrinker deadlock

[Kent Overstreet]

On Wed, Sep 04, 2013 at 04:35:50PM -0700, kernel neophyte wrote:
> On Fri, Aug 30, 2013 at 2:15 PM, Kent Overstreet <kmo@xxxxxxxxxxxxx> wrote:
> > GFP_NOIO means we could be getting called recursively - mca_alloc() ->
> > mca_data_alloc() - definitely can't use mutex_lock(bucket_lock) then.
> > Whoops.
> >
> > Signed-off-by: Kent Overstreet <kmo@xxxxxxxxxxxxx>
> 
> Awesome! I tested the fix... no crashes/deadlock.
> But I see lower benchmark numbers for random write.. is this expected
> for this change ?

No... how much lower?
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