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From: Vlastimil Babka <vbabka@suse.cz>
Date: Thu, 29 Jul 2021 15:20:58 +0200
Subject: [PATCH 01/35] mm, slub: don't call flush_all() from
slab_debug_trace_open()
slab_debug_trace_open() can only be called on caches with SLAB_STORE_USER flag
and as with all slub debugging flags, such caches avoid cpu or percpu partial
slabs altogether, so there's nothing to flush.
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
mm/slub.c | 3 ---
1 file changed, 3 deletions(-)
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -5825,9 +5825,6 @@ static int slab_debug_trace_open(struct
if (!alloc_loc_track(t, PAGE_SIZE / sizeof(struct location), GFP_KERNEL))
return -ENOMEM;
- /* Push back cpu slabs */
- flush_all(s);
-
for_each_kmem_cache_node(s, node, n) {
unsigned long flags;
struct page *page;
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