From: Joonsoo Kim <[email protected]> debug_pagealloc debugging is related to SLAB_POISON flag rather than FORCED_DEBUG option, although FORCED_DEBUG option will enable SLAB_POISON. Fix it.
Signed-off-by: Joonsoo Kim <[email protected]> Cc: Christoph Lameter <[email protected]> Cc: Pekka Enberg <[email protected]> Cc: David Rientjes <[email protected]> Cc: Joonsoo Kim <[email protected]> Cc: Jesper Dangaard Brouer <[email protected]> Signed-off-by: Andrew Morton <[email protected]> --- mm/slab.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/mm/slab.c b/mm/slab.c index 4807cf4..8bca9be 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -2169,7 +2169,6 @@ __kmem_cache_create (struct kmem_cache *cachep, unsigned long flags) else size += BYTES_PER_WORD; } -#if FORCED_DEBUG && defined(CONFIG_DEBUG_PAGEALLOC) /* * To activate debug pagealloc, off-slab management is necessary * requirement. In early phase of initialization, small sized slab @@ -2177,7 +2176,7 @@ __kmem_cache_create (struct kmem_cache *cachep, unsigned long flags) * to check size >= 256. It guarantees that all necessary small * sized slab is initialized in current slab initialization sequence. */ - if (debug_pagealloc_enabled() && + if (debug_pagealloc_enabled() && (flags & SLAB_POISON) && !slab_early_init && size >= kmalloc_size(INDEX_NODE) && size >= 256 && cachep->object_size > cache_line_size() && ALIGN(size, cachep->align) < PAGE_SIZE) { @@ -2185,7 +2184,6 @@ __kmem_cache_create (struct kmem_cache *cachep, unsigned long flags) size = PAGE_SIZE; } #endif -#endif /* * Determine if the slab management is 'on' or 'off' slab. -- 1.9.1
