Re: [PATCH 1/2] block: Optimize blk_mq_submit_bio() for the cache hit scenario

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To: Bart Van Assche <bvanassche@xxxxxxx>
Subject: Re: [PATCH 1/2] block: Optimize blk_mq_submit_bio() for the cache hit scenario
From: Christoph Hellwig <hch@xxxxxx>
Date: Tue, 17 Dec 2024 05:16:47 +0100
Cc: Jens Axboe <axboe@xxxxxxxxx>, linux-block@xxxxxxxxxxxxxxx, Christoph Hellwig <hch@xxxxxx>, Damien Le Moal <dlemoal@xxxxxxxxxx>
In-reply-to: <20241216201901.2670237-2-bvanassche@acm.org>
References: <20241216201901.2670237-1-bvanassche@acm.org> <20241216201901.2670237-2-bvanassche@acm.org>
User-agent: Mutt/1.5.17 (2007-11-01)

On Mon, Dec 16, 2024 at 12:19:00PM -0800, Bart Van Assche wrote:
> Help the CPU branch predictor in case of a cache hit by handling the cache
> hit scenario first.

Numbers, please.

Follow-Ups:
- Re: [PATCH 1/2] block: Optimize blk_mq_submit_bio() for the cache hit scenario
  - From: Bart Van Assche

References:
- [PATCH 0/2] Move blk_mq_submit_bio() error handling
  - From: Bart Van Assche
- [PATCH 1/2] block: Optimize blk_mq_submit_bio() for the cache hit scenario
  - From: Bart Van Assche

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