Re: [PATCH 03/17] btrfs: call btrfs_close_devices from ->kill_sb

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On Fri, Aug 11, 2023 at 12:08:14PM +0200, Christoph Hellwig wrote:
> blkdev_put must not be called under sb->s_umount to avoid a lock order
> reversal with disk->open_mutex once call backs from block devices to
> the file system using the holder ops are supported.  Move the call
> to btrfs_close_devices into btrfs_free_fs_info so that it is closed
> from ->kill_sb (which is also called from the mount failure handling
> path unlike ->put_super) as well as when an fs_info is freed because
> an existing superblock already exists.
> 
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> ---

Looks good to me,
Reviewed-by: Christian Brauner <brauner@xxxxxxxxxx>



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