From: Christoph Hellwig <hch@lst.de>
To: Ming Lei <ming.lei@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@kernel.dk>,
Carlos Maiolino <cem@kernel.org>,
Damien Le Moal <dlemoal@kernel.org>,
Hans Holmberg <hans.holmberg@wdc.com>,
linux-block@vger.kernel.org, linux-xfs@vger.kernel.org
Subject: Re: [PATCH 1/3] block: add a bio_reuse helper
Date: Thu, 18 Dec 2025 10:45:26 +0100 [thread overview]
Message-ID: <20251218094526.GA10629@lst.de> (raw)
In-Reply-To: <aUPL8Jr39N-SIf_W@fedora>
On Thu, Dec 18, 2025 at 05:40:00PM +0800, Ming Lei wrote:
> > +/**
> > + * bio_reuse - reuse a bio with the payload left intact
> > + * @bio bio to reuse
> > + *
> > + * Allow reusing an existing bio for another operation with all set up
> > + * fields including the payload, device and end_io handler left intact.
> > + *
> > + * Typically used for bios first used to read data which is then written
> > + * to another location without modification.
> > + */
> > +void bio_reuse(struct bio *bio)
> > +{
> > + unsigned short vcnt = bio->bi_vcnt, i;
> > + bio_end_io_t *end_io = bio->bi_end_io;
> > + void *private = bio->bi_private;
>
> The incoming bio can't be a cloned bio, so
It better no be, yes.
next prev parent reply other threads:[~2025-12-18 9:45 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-18 6:31 improve zoned XFS GC buffer management Christoph Hellwig
2025-12-18 6:31 ` [PATCH 1/3] block: add a bio_reuse helper Christoph Hellwig
2025-12-18 6:43 ` Damien Le Moal
2025-12-18 9:20 ` Hannes Reinecke
2025-12-18 9:35 ` Christoph Hellwig
2025-12-18 9:40 ` Ming Lei
2025-12-18 9:45 ` Christoph Hellwig [this message]
2025-12-19 7:45 ` Hans Holmberg
2025-12-18 6:31 ` [PATCH 2/3] xfs: use bio_reuse in the zone GC code Christoph Hellwig
2025-12-18 6:45 ` Damien Le Moal
2025-12-19 7:48 ` Hans Holmberg
2025-12-18 6:31 ` [PATCH 3/3] xfs: rework zone GC buffer management Christoph Hellwig
2025-12-18 7:12 ` Damien Le Moal
2025-12-19 8:06 ` Hans Holmberg
-- strict thread matches above, loose matches on Subject: below --
2026-01-06 7:58 improve zoned XFS GC buffer management v2 Christoph Hellwig
2026-01-06 7:58 ` [PATCH 1/3] block: add a bio_reuse helper Christoph Hellwig
2026-01-09 12:12 ` Carlos Maiolino
2026-01-09 16:19 ` Darrick J. Wong
2026-01-09 16:25 ` Christoph Hellwig
2026-01-10 0:50 ` Darrick J. Wong
2026-01-09 16:30 ` Carlos Maiolino
2026-01-12 20:22 ` Jens Axboe
2026-01-13 7:19 improve zoned XFS GC buffer management v3 Christoph Hellwig
2026-01-13 7:19 ` [PATCH 1/3] block: add a bio_reuse helper Christoph Hellwig
2026-01-14 13:06 improve zoned XFS GC buffer management v4 Christoph Hellwig
2026-01-14 13:06 ` [PATCH 1/3] block: add a bio_reuse helper Christoph Hellwig
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