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authorCanjiang Lu <canjiang.lu@samsung.com>2018-06-07 17:05:20 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-06-07 17:34:34 -0700
commit05088e5de02d274efba5e902d6cc9618e5de671a (patch)
tree56a2594ded36731f33e384765f6ed4f68c589d59 /mm/slub.c
parenta38965bf941b7c2af50de09c96bc5f03e136caef (diff)
mm/slub: remove obsolete comment
The obsolete comment removed in this patch was introduced by 51df1142816e4 ("slub: Dynamically size kmalloc cache allocations"). I paste related modification from that commit: +#ifdef CONFIG_NUMA + /* + * Allocate kmem_cache_node properly from the kmem_cache slab. + * kmem_cache_node is separately allocated so no need to + * update any list pointers. + */ + temp_kmem_cache_node = kmem_cache_node; + kmem_cache_node = kmem_cache_alloc(kmem_cache, GFP_NOWAIT); + memcpy(kmem_cache_node, temp_kmem_cache_node, kmem_size); + + kmem_cache_bootstrap_fixup(kmem_cache_node); + + caches++; +#else + /* + * kmem_cache has kmem_cache_node embedded and we moved it! + * Update the list heads + */ + INIT_LIST_HEAD(&kmem_cache->local_node.partial); + list_splice(&temp_kmem_cache->local_node.partial, &kmem_cache->local_node.partial); +#ifdef CONFIG_SLUB_DEBUG + INIT_LIST_HEAD(&kmem_cache->local_node.full); + list_splice(&temp_kmem_cache->local_node.full, &kmem_cache->local_node.full); +#endif As we can see there're used to distinguish the difference handling between NUMA/non-NUMA configuration in the original commit. I think it doesn't make any sense in current implementation which is placed above kmem_cache_node = bootstrap(&boot_kmem_cache_node); So maybe it's better to remove them now? Link: http://lkml.kernel.org/r/5af26f58.1c69fb81.1be0e.c520SMTPIN_ADDED_BROKEN@mx.google.com Signed-off-by: Canjiang Lu <canjiang.lu@samsung.com> Acked-by: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/slub.c')
-rw-r--r--mm/slub.c6
1 files changed, 0 insertions, 6 deletions
diff --git a/mm/slub.c b/mm/slub.c
index ec5916483b07..48f75872c356 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -4241,12 +4241,6 @@ void __init kmem_cache_init(void)
SLAB_HWCACHE_ALIGN, 0, 0);
kmem_cache = bootstrap(&boot_kmem_cache);
-
- /*
- * Allocate kmem_cache_node properly from the kmem_cache slab.
- * kmem_cache_node is separately allocated so no need to
- * update any list pointers.
- */
kmem_cache_node = bootstrap(&boot_kmem_cache_node);
/* Now we can use the kmem_cache to allocate kmalloc slabs */