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Date: Thu, 25 Jan 2024 18:54:28 +0900
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Subject: Re: [PATCHv3 1/1] block: introduce content activity based ioprio
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To: Zhaoyang Huang <huangzhaoyang@gmail.com>
Cc: "zhaoyang.huang" <zhaoyang.huang@unisoc.com>,
 Andrew Morton <akpm@linux-foundation.org>, Jens Axboe <axboe@kernel.dk>,
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References: <20240125071901.3223188-1-zhaoyang.huang@unisoc.com>
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From: Damien Le Moal <dlemoal@kernel.org>
Organization: Western Digital Research
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On 1/25/24 18:37, Zhaoyang Huang wrote:
> Actually, the activity information comes from page's history (recorded
> at page cache's slot) instead of user space in step(1) and can be
> associate with bio in step(2) or iterate the bio in step(3)
> page fault(or vfs)(1)
> |
> alloc_pages
> |
> add_page_to_pagecache(get the page's activity information)
> |
> fs_readpage
> |
> bio_add_page(2)
> |

set your prio here. No change to the block layer needed. That is FS land.

> submit_bio(3)


-- 
Damien Le Moal
Western Digital Research