Re: [PATCH] vfs: use RCU in ilookup

From: Christian Brauner
Date: Mon Jul 15 2024 - 07:38:14 EST


On Mon, 15 Jul 2024 09:13:24 +0200, Mateusz Guzik wrote:
> A soft lockup in ilookup was reported when stress-testing a 512-way
> system [1] (see [2] for full context) and it was verified that not
> taking the lock shifts issues back to mm.
>
> [1] https://lore.kernel.org/linux-mm/56865e57-c250-44da-9713-cf1404595bcc@xxxxxxx/
> [2] https://lore.kernel.org/linux-mm/d2841226-e27b-4d3d-a578-63587a3aa4f3@xxxxxxx/
>
> [...]

Applied to the vfs.inode.rcu branch of the vfs/vfs.git tree.
Patches in the vfs.inode.rcu branch should appear in linux-next soon.

Please report any outstanding bugs that were missed during review in a
new review to the original patch series allowing us to drop it.

It's encouraged to provide Acked-bys and Reviewed-bys even though the
patch has now been applied. If possible patch trailers will be updated.

Note that commit hashes shown below are subject to change due to rebase,
trailer updates or similar. If in doubt, please check the listed branch.

tree: https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git
branch: vfs.inode.rcu

[1/1] vfs: use RCU in ilookup
https://git.kernel.org/vfs/vfs/c/2eae762dece6