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md: flush md_rdev_misc_wq for HOT_ADD_DISK case

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Since rdev->kobj is removed asynchronously, it is possible that the
rdev->kobj still exists when try to add the rdev again after rdev
is removed. But this path md_ioctl (HOT_ADD_DISK) -> hot_add_disk
-> bind_rdev_to_array missed it.

Signed-off-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
Signed-off-by: Song Liu <songliubraving@fb.com>
This commit is contained in:
Guoqing Jiang 2020-04-04 23:57:10 +02:00 committed by Song Liu
parent f6766ff6af
commit 78b990cf28
1 changed files with 1 additions and 1 deletions
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2
drivers/md/md.c
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@ -7512,7 +7512,7 @@ static int md_ioctl(struct block_device *bdev, fmode_t mode,
}
if (cmd == ADD_NEW_DISK)
if (cmd == ADD_NEW_DISK || cmd == HOT_ADD_DISK)
flush_rdev_wq(mddev);
if (cmd == HOT_REMOVE_DISK)