Re: [PATCH 4/4] block: Make blk_get_backing_dev_info() safe without open bdev

[PATCH 0/4 v2] BDI lifetime fix · Jan Kara <jack@suse.cz> · 2017-01-31
[PATCH 1/4] block: Unhash block device inodes on gendisk destruction · Jan Kara <jack@suse.cz> · 2017-01-31
Re: [PATCH 1/4] block: Unhash block device inodes on gendisk destruction · Christoph Hellwig <hch@infradead.org> · 2017-02-01
[PATCH 2/4] block: Use pointer to backing_dev_info from request_queue · Jan Kara <jack@suse.cz> · 2017-01-31
Re: [PATCH 2/4] block: Use pointer to backing_dev_info from request_queue · Christoph Hellwig <hch@infradead.org> · 2017-02-01
[PATCH 3/4] block: Dynamically allocate and refcount backing_dev_info · Jan Kara <jack@suse.cz> · 2017-01-31
Re: [PATCH 3/4] block: Dynamically allocate and refcount backing_dev_info · Christoph Hellwig <hch@infradead.org> · 2017-02-01
Re: [PATCH 3/4] block: Dynamically allocate and refcount backing_dev_info · Jan Kara <jack@suse.cz> · 2017-02-01
Re: [PATCH 3/4] block: Dynamically allocate and refcount backing_dev_info · Jens Axboe <axboe@kernel.dk> · 2017-02-01
Re: [PATCH 3/4] block: Dynamically allocate and refcount backing_dev_info · Jan Kara <jack@suse.cz> · 2017-02-02
[PATCH 4/4] block: Make blk_get_backing_dev_info() safe without open bdev · Jan Kara <jack@suse.cz> · 2017-01-31
Re: [PATCH 4/4] block: Make blk_get_backing_dev_info() safe without open bdev · Christoph Hellwig <hch@infradead.org> · 2017-02-01
Re: [PATCH 4/4] block: Make blk_get_backing_dev_info() safe without open bdev · Jan Kara <jack@suse.cz> · 2017-02-01
Re: [PATCH 4/4] block: Make blk_get_backing_dev_info() safe without open bdev · Christoph Hellwig <hch@infradead.org> · 2017-02-01
Re: [PATCH 4/4] block: Make blk_get_backing_dev_info() safe without open bdev · Dan Williams <hidden> · 2017-02-01
Re: [PATCH 0/4 v2] BDI lifetime fix · Thiago Jung Bauermann <hidden> · 2017-02-06
Re: [PATCH 0/4 v2] BDI lifetime fix · Thiago Jung Bauermann <hidden> · 2017-02-06
Re: [PATCH 0/4 v2] BDI lifetime fix · Jan Kara <jack@suse.cz> · 2017-02-07
Re: [PATCH 0/4 v2] BDI lifetime fix · Tejun Heo <tj@kernel.org> · 2017-02-07
Re: [PATCH 0/4 v2] BDI lifetime fix · Jan Kara <jack@suse.cz> · 2017-02-08
Re: [PATCH 0/4 v2] BDI lifetime fix · Jan Kara <jack@suse.cz> · 2017-02-08
Re: [PATCH 0/4 v2] BDI lifetime fix · Dan Williams <hidden> · 2017-02-08

From: Christoph Hellwig <hch@infradead.org>
Date: 2017-02-01 09:53:22

Looks fine:

Reviewed-by: Christoph Hellwig <hch@lst.de>

But can you also add another patch to kill off blk_get_backing_dev_info?
The direct dereference is short and cleaner.  Additionally the bt_bdi
field in XFS could go away, too.

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