linux-kernel - Re: [PATCH] blk-merge: fix blk_recount

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Message-ID: <CACVXFVMGkNAxM0fzLOjBvgvxfVLAxWruMC35CzX_FN5wMk+XQw@mail.gmail.com>
Date:	Fri, 5 Sep 2014 14:28:49 +0800
From:	Ming Lei <ming.lei@...onical.com>
To:	Rusty Russell <rusty@...tcorp.com.au>
Cc:	Jens Axboe <axboe@...nel.dk>,
	Christoph Hellwig <hch@...radead.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kick In <pierre-andre.morey@...onical.com>,
	Chris J Arges <chris.j.arges@...onical.com>
Subject: Re: [PATCH] blk-merge: fix blk_recount_segments

On Fri, Sep 5, 2014 at 2:26 PM, Ming Lei <ming.lei@...onical.com> wrote:
> On Fri, Sep 5, 2014 at 1:43 PM, Rusty Russell <rusty@...tcorp.com.au> wrote:
>
> The main problem is the extra kmalloc(), which might be
> improved by a memory pool.

Or use kind of EWMA model to cache previous allocated indirect descriptors.


Thanks,
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