cache_grow() can reenable irqs so the cpu (and node) can change, so ensure
that we take list_lock on the correct nodelist.
Fixes an issue with
072bb0aa5e0 ("mm: sl[au]b: add knowledge of PFMEMALLOC
reserve pages") where list_lock for the wrong node was taken after growing
the cache.
Reported-and-tested-by: Haggai Eran <haggaie@mellanox.com>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
/* cache_grow can reenable interrupts, then ac could change. */
ac = cpu_cache_get(cachep);
+ node = numa_mem_id();
/* no objects in sight? abort */
if (!x && (ac->avail == 0 || force_refill))