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Re: [PATCH 07/11] pktcdvd: use bio_clone_fast() instead of bio_clone()

From Christoph Hellwig <hch@infradead.org>
Newsgroups linux.kernel
Subject Re: [PATCH 07/11] pktcdvd: use bio_clone_fast() instead of bio_clone()
Date 2017-04-21 13:30 +0200
Message-ID <tyEVb-5ck-7@gated-at.bofh.it> (permalink)
References <tyd8C-4Wq-7@gated-at.bofh.it> <tyd8D-4Wq-41@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Thu, Apr 20, 2017 at 03:38:49PM +1000, NeilBrown wrote:
> pktcdvd doesn't change the bi_io_vec of the clone bio,
> so it is more efficient to use bio_clone_fast(), and not clone
> the bi_io_vec.
> This requires providing a bio_set, and it is safest to
> provide a dedicated bio_set rather than sharing
> fs_bio_set, which filesytems use.
> This new bio_set, pkt_bio_set, can also be use for the bio_split()
> call as the two allocations (bio_clone_fast, and bio_split) are
> independent, neither can block a bio allocated by the other.

Looks fine:

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

But didn't we decide we want to kill off pktcdvd a while ago?

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[PATCH 07/11] pktcdvd: use bio_clone_fast() instead of bio_clone() NeilBrown <neilb@suse.com> - 2017-04-20 07:50 +0200
  Re: [PATCH 07/11] pktcdvd: use bio_clone_fast() instead of  bio_clone() Christoph Hellwig <hch@infradead.org> - 2017-04-21 13:30 +0200

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