Re: [patch 20/23] dentries: Add constructor

[Christoph Lameter <clameter@sgi.com>]

On Thu, 8 Nov 2007, Mel Gorman wrote:

> > Signed-off-by: Christoph Lameter <clameter@sgi.com>
> 
> Seems to be some garbling on there in the signed-off lines.

Yes that needs to be fixed.

> > +void dcache_ctor(struct kmem_cache *s, void *p)
> > +{
> > +	struct dentry *dentry = p;
> > +
> > +	spin_lock_init(&dentry->d_lock);
> > +	dentry->d_inode = NULL;
> > +	INIT_LIST_HEAD(&dentry->d_lru);
> > +	INIT_LIST_HEAD(&dentry->d_alias);
> > +}
> > +
> 
> Is there any noticable overhead to the constructor?

Its a minor performance win since we can avoid reinitializing these
values and zeroing the object on alloc if there are already allocated 
objects.
-
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/