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md: clean up invalid BUG_ON in md_ioctl

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'disk->private_data' is set to mddev in md_alloc() and never set to NULL,
and users need to open mddev before submitting ioctl. So mddev must not
have been freed during ioctl, and there is no need to check mddev here.
Clean up it.

Signed-off-by: Li Nan <linan122@huawei.com>
Reviewed-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20240226031444.3606764-4-linan666@huaweicloud.com
This commit is contained in:
Li Nan 2024-02-26 11:14:38 +08:00 committed by Song Liu
parent 4e26593944
commit 9dd8702e7c
1 changed files with 0 additions and 5 deletions
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5
drivers/md/md.c
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@ -7622,11 +7622,6 @@ static int md_ioctl(struct block_device *bdev, blk_mode_t mode,
mddev = bdev->bd_disk->private_data;
if (!mddev) {
BUG();
goto out;
}
/* Some actions do not requires the mutex */
switch (cmd) {
case GET_ARRAY_INFO: