On Tue, 26 Jun 2007, Andrew Morton wrote:
> > No slab operations may be performed in get_reference(). Interrupts
>
> s/get_reference/get/, yes?
Correct.
> (What's the smallest sized object slub will create? 4 bytes?)
__alignof__(unsigned long long)
> To hold off a concurrent free while defragging, the code relies upon
> slab_lock() on the current page, yes?
Right.
> But slab_lock() isn't taken for slabs whose objects are larger than
> PAGE_SIZE. How's that handled?
slab lock is always taken. How did you get that idea?
> Overall: looks good. It'd be nice to get a buffer_head shrinker in place,
> see how that goes from a proof-of-concept POV.
Ok.
> How much testing has been done on this code, and of what form, and with
> what results?
I posted them in the intro of the last full post and then Michael
Piotrowski did some stress tests.
See http://marc.info/?l=linux-mm&m=118125373320855&w=2
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