slub: Use correct cpu_slab on dead cpu
Pass a kmem_cache_cpu pointer into unfreeze partials so that a different
kmem_cache_cpu structure than the local one can be specified.
Reported-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Christoph Lameter <cl@linux.com>
[bigeasy@linutronix: remove unused n2]
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
diff --git a/mm/slub.c b/mm/slub.c
index 634aabc..f788e7e 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1879,11 +1879,15 @@
}
}
-/* Unfreeze all the cpu partial slabs */
-static void unfreeze_partials(struct kmem_cache *s)
+/*
+ * Unfreeze all the cpu partial slabs.
+ *
+ * This function must be called with interrupt disabled.
+ */
+static void unfreeze_partials(struct kmem_cache *s,
+ struct kmem_cache_cpu *c)
{
struct kmem_cache_node *n = NULL;
- struct kmem_cache_cpu *c = this_cpu_ptr(s->cpu_slab);
struct page *page, *discard_page = NULL;
while ((page = c->partial)) {
@@ -1989,7 +1993,7 @@
* set to the per node partial list.
*/
local_irq_save(flags);
- unfreeze_partials(s);
+ unfreeze_partials(s, this_cpu_ptr(s->cpu_slab));
local_irq_restore(flags);
pobjects = 0;
pages = 0;
@@ -2027,7 +2031,7 @@
if (c->page)
flush_slab(s, c);
- unfreeze_partials(s);
+ unfreeze_partials(s, c);
}
}
