From: Christoph Hellwig <hch@lst.de>
To: Chris Mason <clm@meta.com>
Cc: Christoph Hellwig <hch@lst.de>, Chris Mason <clm@fb.com>,
linux-btrfs@vger.kernel.org, dsterba@suse.com,
josef@toxicpanda.com
Subject: Re: [PATCH RFC] Btrfs: only subtract from len_to_oe_boundary when it is tracking an extent
Date: Mon, 31 Jul 2023 21:35:43 +0200 [thread overview]
Message-ID: <20230731193543.GA13557@lst.de> (raw)
In-Reply-To: <35b14d0e-3a53-fca7-8290-b26f31d07fb5@meta.com>
On Mon, Jul 31, 2023 at 02:52:23PM -0400, Chris Mason wrote:
> > I'm torn. On the one hand "btrfs: limit write bios to a single ordered
> > extent" is a pretty significant behavior change, on the other hand
> > stable-only patches with totally different behavior are always a bit
> > strange.
>
> When are we creating bios without bio_ctrl->wbc set? I think reads will
> do this?
Yes. These days the bio_ctrl is only used for data I/O, and
bio_ctrl->wbc is set for all writeback I/O, and clear for all read I/O.
next prev parent reply other threads:[~2023-07-31 19:35 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-30 19:02 [PATCH RFC] Btrfs: only subtract from len_to_oe_boundary when it is tracking an extent Chris Mason
2023-07-30 20:27 ` Sweet Tea Dorminy
2023-07-31 19:22 ` Chris Mason
2023-08-01 2:59 ` Sweet Tea Dorminy
2023-07-31 2:27 ` Qu Wenruo
2023-07-31 7:02 ` Christoph Hellwig
2023-07-31 18:10 ` Chris Mason
2023-08-01 0:58 ` Qu Wenruo
2023-07-31 7:00 ` Christoph Hellwig
2023-07-31 18:52 ` Chris Mason
2023-07-31 19:35 ` Christoph Hellwig [this message]
2023-07-31 21:05 ` Chris Mason
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