Hi,
在 2023/06/13 16:02, Xiao Ni 写道:
在 2023/5/29 下午9:20, Yu Kuai 写道:
From: Yu Kuai <yuku...@huawei.com>
Prepare to handle 'idle' and 'frozen' differently to fix a deadlock,
there
are no functional changes except that MD_RECOVERY_RUNNING is checked
again after 'reconfig_mutex' is held.
Can you explain more about why it needs to check MD_RECOVERY_RUNNING
again here?
As I explain in the following comment:
+ /*
+ * Check again in case MD_RECOVERY_RUNNING is cleared before lock is
+ * held.
+ */
+ if (!test_bit(MD_RECOVERY_RUNNING, &mddev->recovery)) {
+ mddev_unlock(mddev);
+ return;
+ }
Thanks,
Kuai
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