[Ocfs2-devel] [PATCH] Reoganize data elements to reduce memory footprint

[Goldwyn Rodrigues]

Hi Joel,


On Wed, Jun 9, 2010 at 7:54 PM, Joel Becker <Joel.Becker at oracle.com> wrote:

>
>        On the subject of extreme structure diets...  ocfs2_lock_res
> uses ints for l_ro_holders and l_ex_holders.  Do we ever have more than
> 64K holders?  Can we squash those into u16s?  I note that our code
> doesn't handle overflow at all, but 2^32 holders is significantly
> larger.

Good idea.

>        Goldwyn, did you test this with CONFIG_OCFS2_FS_STATS and
> CONFIG_DEBUG_LOCK_ENABLED turned on or off?  I'd be interested in that
> data too.
>

I had CONFIG_OCFS2_FS_STATS enabled and CONFIG_DEBUG_LOCK_ALLOC disabled.


-- 
Goldwyn