Re: [Slub cleanup6 4/5] slub: Move node determination out of hotpath

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On Wed, 11 May 2011, David Rientjes wrote:

> I'd much prefer to just add a
>
> 	c->node = page_to_nid(page);
>
> rather than the new label and goto into a conditional.
>
> >  	}
> >  	if (!(gfpflags & __GFP_NOWARN) && printk_ratelimit())
> >  		slab_out_of_memory(s, gfpflags, node);
>

Hmmm... Looks like we also missed to use the label.


Subject: slub: Fix control flow in slab_alloc

Signed-off-by: Christoph Lameter <cl@xxxxxxxxx>

---
 mm/slub.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6/mm/slub.c
===================================================================
--- linux-2.6.orig/mm/slub.c	2011-05-12 11:41:44.000000000 -0500
+++ linux-2.6/mm/slub.c	2011-05-12 11:42:25.000000000 -0500
@@ -1833,7 +1833,6 @@ new_slab:
 	page = get_partial(s, gfpflags, node);
 	if (page) {
 		stat(s, ALLOC_FROM_PARTIAL);
-load_from_page:
 		c->node = page_to_nid(page);
 		c->page = page;
 		goto load_freelist;
@@ -1856,6 +1855,7 @@ load_from_page:

 		slab_lock(page);
 		__SetPageSlubFrozen(page);
+		c->node = page_to_nid(page);
 		c->page = page;
 		goto load_freelist;
 	}

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