Commit 78b990cf authored Apr 04, 2020 by Guoqing Jiang Committed by Song Liu May 13, 2020

md: flush md_rdev_misc_wq for HOT_ADD_DISK case



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>

parent f6766ff6

drivers/md/md.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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)

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