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Date:	Tue, 5 Apr 2016 18:34:11 -0800
From:	Kent Overstreet <>
To:	Ming Lei <>
Cc:	Jens Axboe <>,
	Linux Kernel Mailing List <>,, Christoph Hellwig <>,
	Eric Wheeler <>,
	Sebastian Roesner <>,
	"4.2+" <>, Shaohua Li <>
Subject: Re: [PATCH] block: make sure big bio is splitted into at most 256

On Wed, Apr 06, 2016 at 10:30:22AM +0800, Ming Lei wrote:
> Now limit.max_segments is for limiting segments from hw view, one this
> segment may include lots of pages/bvecs.
> The current bio_clone() issue is that we can't clone from one bio which
> includes more than 256 bvecs, maybe all these 256 bvecs belong to
> one same hw segment.

So the distinction is purely a post multipage bvec thing?

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