[pve-devel] applied: [PATCH kernel] Backport two io-wq fixes relevant for io_uring

[Thomas Lamprecht]

On 23.11.21 12:59, Fabian Ebner wrote:
> There were quite a few reports in the community forum about Windows
> VMs with SATA disks not working after upgrading to kernel 5.13.
> Issue was reproducible during the installation of Win2019 (suggested
> by Thomas), and it's already fixed in 5.15. Bisecting led to
>     io-wq: split bounded and unbounded work into separate lists
> as the commit fixing the issue.
> 
> Indeed, the commit states
>     Fixes: ecc53c48c13d ("io-wq: check max_worker limits if a worker transitions bound state")
> which is present as a backport in ubuntu-impish:
>     f9eb79f840052285408ae9082dc4419dc1397954
> 
> The first backport
>     io-wq: fix queue stalling race
> also sounds nice to have and additionally served as a preparation for
> the second one to apply more cleanly.
> 
> Signed-off-by: Fabian Ebner <f.ebner at proxmox.com>
> ---
>  .../0010-io-wq-fix-queue-stalling-race.patch  |  72 +++
>  ...ded-and-unbounded-work-into-separate.patch | 415 ++++++++++++++++++
>  2 files changed, 487 insertions(+)
>  create mode 100644 patches/kernel/0010-io-wq-fix-queue-stalling-race.patch
>  create mode 100644 patches/kernel/0011-io-wq-split-bounded-and-unbounded-work-into-separate.patch
> 
>

applied, thanks!!

This fixes my reproducer (windows + SATA) nicely and Dominik also got their issue with
mass clone + setup of nested PVE on Debian use case working again.