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SubjectRe: [PATCH v4 5/8] mm: shrinkers: make count and scan in shrinker debugfs lockless
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On 2023/3/9 17:39, Vlastimil Babka wrote:
> On 3/7/23 07:56, Qi Zheng wrote:
>> Like global and memcg slab shrink, also use SRCU to
>> make count and scan operations in memory shrinker
>> debugfs lockless.
>>
>> Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com>
>> ---
>> mm/shrinker_debug.c | 24 +++++++-----------------
>> 1 file changed, 7 insertions(+), 17 deletions(-)
>>
>> diff --git a/mm/shrinker_debug.c b/mm/shrinker_debug.c
>> index 39c3491e28a3..6aa7a7ec69da 100644
>> --- a/mm/shrinker_debug.c
>> +++ b/mm/shrinker_debug.c
>
> Forgot to mention that this file should now likely also #include <linux/srcu.h>

Got it. Will do.

Thanks,
Qi

>
>> @@ -9,6 +9,7 @@
>> /* defined in vmscan.c */
>> extern struct rw_semaphore shrinker_rwsem;
>> extern struct list_head shrinker_list;
>> +extern struct srcu_struct shrinker_srcu;
>

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