Re: [PATCHv3 1/1] block: introduce content activity based ioprio

[Zhaoyang Huang]

On Thu, Jan 25, 2024 at 5:54 PM Damien Le Moal <dlemoal@xxxxxxxxxx> wrote:
>
> 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.
Yes, that is what I suggested in patchv3 which keeps the block layer
clean by introducing a set of helper functions which wrap up the
activity things for FS utilization.
>
> > submit_bio(3)
>
>
> --
> Damien Le Moal
> Western Digital Research
>