From: Yu Kuai Date: Fri, 29 Aug 2025 08:04:25 +0000 (+0800) Subject: md/md-bitmap: make method bitmap_ops->daemon_work optional X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=66be318e6659d10e90f487e2610409cef659dbfe;p=thirdparty%2Fkernel%2Fstable.git md/md-bitmap: make method bitmap_ops->daemon_work optional daemon_work() will be called by daemon thread, on the one hand, daemon thread doesn't have strict wake-up time; on the other hand, too much work are put to daemon thread, like handle sync IO, handle failed or specail normal IO, handle recovery, and so on. Hence daemon thread may be too busy to clear dirty bits in time. Make bitmap_ops->daemon_work() optional and following patches will use separate async work to clear dirty bits for the new bitmap. Link: https://lore.kernel.org/linux-raid/20250829080426.1441678-11-yukuai1@huaweicloud.com Signed-off-by: Yu Kuai Reviewed-by: Christoph Hellwig Reviewed-by: Hannes Reinecke Reviewed-by: Li Nan --- diff --git a/drivers/md/md.c b/drivers/md/md.c index f5d0025379890..2f1907f3bc254 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -9997,7 +9997,7 @@ static void unregister_sync_thread(struct mddev *mddev) */ void md_check_recovery(struct mddev *mddev) { - if (md_bitmap_enabled(mddev, false)) + if (md_bitmap_enabled(mddev, false) && mddev->bitmap_ops->daemon_work) mddev->bitmap_ops->daemon_work(mddev); if (signal_pending(current)) {