[PATCHSET,0/2] Optimize block_device utilization

Message ID	20230414134848.91563-1-axboe@kernel.dk (mailing list archive)
Headers	show Return-Path: <linux-block-owner@vger.kernel.org> From: Jens Axboe <axboe@kernel.dk> To: linux-block@vger.kernel.org Subject: [PATCHSET 0/2] Optimize block_device utilization Date: Fri, 14 Apr 2023 07:48:46 -0600 Message-Id: <20230414134848.91563-1-axboe@kernel.dk> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	Optimize block_device utilization \| expand [PATCHSET,0/2] Optimize block_device utilization [1/2] block: re-arrange the struct block_device fields for better layout [2/2] block: store bdev->bd_disk->fops->submit_bio state in bdev

Message ID

20230414134848.91563-1-axboe@kernel.dk (mailing list archive)

Headers

From: Jens Axboe <axboe@kernel.dk>
To: linux-block@vger.kernel.org
Subject: [PATCHSET 0/2] Optimize block_device utilization
Date: Fri, 14 Apr 2023 07:48:46 -0600
Message-Id: <20230414134848.91563-1-axboe@kernel.dk>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Series

Optimize block_device utilization | expand

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Jens Axboe April 14, 2023, 1:48 p.m. UTC

Hi,

First is just a prep patch that moves struct device, which is quite the
pig, out of line in block_device, and then shuffles a few fields for
better layout. It also saves 16 bytes of space in there while at it.

Second patch caches the bdev->disk->fops->submit_bio state in the bdev,
so we can avoid this long dependent memory load chain in the fast
path.