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 >
