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From: Mike Snitzer <snitzer-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
Cc: Jens Axboe <axboe-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org>,
	Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-block-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
	dm-devel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
	Li Zefan <lizefan-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>,
	Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>,
	Dennis Zhou <dennis-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Subject: Re: [PATCH 01/14] dm: use bio_uninit instead of bio_disassociate_blkg
Date: Wed, 8 Jul 2020 10:02:54 -0400
Message-ID: <20200708140254.GA7539@redhat.com> (raw)
In-Reply-To: <20200627073159.2447325-2-hch-jcswGhMUV9g@public.gmane.org>

On Sat, Jun 27 2020 at  3:31am -0400,
Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org> wrote:

> bio_uninit is the proper API to clean up a BIO that has been allocated
> on stack or inside a structure that doesn't come from the BIO allocator.
> Switch dm to use that instead of bio_disassociate_blkg, which really is
> an implementation detail.  Note that the bio_uninit calls are also moved
> to the two callers of __send_empty_flush, so that they better pair with
> the bio_init calls used to initialize them.
> 
> Signed-off-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>

I've picked this up as a fix for 5.8

Thanks,
Mike

  parent reply index

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-27  7:31 drive-by blk-cgroup cleanups Christoph Hellwig
2020-06-27  7:31 ` [PATCH 01/14] dm: use bio_uninit instead of bio_disassociate_blkg Christoph Hellwig
2020-06-29  9:31   ` Johannes Thumshirn
     [not found]   ` <20200627073159.2447325-2-hch-jcswGhMUV9g@public.gmane.org>
2020-07-08 14:02     ` Mike Snitzer [this message]
     [not found] ` <20200627073159.2447325-1-hch-jcswGhMUV9g@public.gmane.org>
2020-06-27  7:31   ` [PATCH 02/14] block: remove bio_disassociate_blkg Christoph Hellwig
2020-06-29  9:33     ` Johannes Thumshirn
2020-06-27  7:31   ` [PATCH 08/14] block: bypass blkg_tryget_closest for the root_blkg Christoph Hellwig
2020-06-27  7:31   ` [PATCH 12/14] blk-cgroup: move rcu locking from blkcg_bio_issue_check to blk_throtl_bio Christoph Hellwig
2020-06-27  7:31 ` [PATCH 03/14] block: really clone the block cgroup in bio_clone_blkg_association Christoph Hellwig
2020-06-29  9:37   ` Johannes Thumshirn
2020-06-27  7:31 ` [PATCH 04/14] block: merge __bio_associate_blkg into bio_associate_blkg_from_css Christoph Hellwig
2020-06-29  9:55   ` Johannes Thumshirn
2020-06-27  7:31 ` [PATCH 05/14] block: move bio_associate_blkg_from_page to mm/page_io.c Christoph Hellwig
2020-06-29  9:59   ` Johannes Thumshirn
2020-06-29 10:08   ` Johannes Thumshirn
2020-06-27  7:31 ` [PATCH 06/14] block: move the bio cgroup associatation helpers to blk-cgroup.c Christoph Hellwig
2020-06-29 11:51   ` Johannes Thumshirn
2020-06-27  7:31 ` [PATCH 07/14] block: merge blkg_lookup_create and __blkg_lookup_create Christoph Hellwig
2020-06-29 12:21   ` Johannes Thumshirn
2020-06-27  7:31 ` [PATCH 09/14] block: move the initial blkg lookup into blkg_tryget_closest Christoph Hellwig
2020-06-27  7:31 ` [PATCH 10/14] blk-cgroup: remove the !bio->bi_blkg check in blkcg_bio_issue_check Christoph Hellwig
2020-06-27  7:31 ` [PATCH 11/14] cgroup: unexport cgroup_rstat_updated Christoph Hellwig
2020-06-27  7:31 ` [PATCH 13/14] blk-cgroup: remove blkcg_bio_issue_check Christoph Hellwig
2020-06-27  7:31 ` [PATCH 14/14] blk-cgroup: remove a dead check in blk_throtl_bio Christoph Hellwig
2020-06-29  8:05 ` drive-by blk-cgroup cleanups Johannes Thumshirn
2020-06-29  8:08   ` Christoph Hellwig
2020-06-29  8:12     ` Johannes Thumshirn
2020-06-29 13:56 ` Tejun Heo
2020-06-29 15:09 ` Jens Axboe

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