lkml.org 
[lkml]   [2007]   [Jun]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [patch 12/26] SLUB: Slab defragmentation core
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

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-06-26 20:21    [W:0.105 / U:0.396 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site