Messages in this thread Patch in this message | | | Date | Fri, 15 Apr 2011 15:47:50 -0500 | From | Christoph Lameter <> | Subject | [slubllv3 20/21] slub: Not necessary to check for empty slab on load_freelist |
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Load freelist is now only branched to if there are objects available. So no need to check.
--- mm/slub.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
Index: linux-2.6/mm/slub.c =================================================================== --- linux-2.6.orig/mm/slub.c 2011-04-01 10:22:56.000000000 -0500 +++ linux-2.6/mm/slub.c 2011-04-01 10:22:58.000000000 -0500 @@ -1976,14 +1976,13 @@ static void *__slab_alloc(struct kmem_ca "__slab_alloc")); } -load_freelist: - VM_BUG_ON(!page->frozen); - if (unlikely(!object)) { c->page = NULL; goto new_slab; } +load_freelist: + VM_BUG_ON(!page->frozen); c->freelist = get_freepointer(s, object); #ifdef CONFIG_CMPXCHG_LOCAL
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