Re: [PATCH] fs/aio: obey min_nr when doing wakeups

From: Christian Brauner <brauner@kernel.org>
To: Kent Overstreet <kent.overstreet@linux.dev>
Cc: Christian Brauner <brauner@kernel.org>,
	linux-aio@kvack.org, linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH] fs/aio: obey min_nr when doing wakeups
Date: Fri, 24 Nov 2023 08:47:29 +0100	[thread overview]
Message-ID: <20231124-verstanden-abhandeln-da0501d1d463@brauner> (raw)
In-Reply-To: <20231122234257.179390-1-kent.overstreet@linux.dev>

On Wed, 22 Nov 2023 18:42:53 -0500, Kent Overstreet wrote:
> I've been observing workloads where IPIs due to wakeups in
> aio_complete() are ~15% of total CPU time in the profile. Most of those
> wakeups are unnecessary when completion batching is in use in
> io_getevents().
> 
> This plumbs min_nr through via the wait eventry, so that aio_complete()
> can avoid doing unnecessary wakeups.
> 
> [...]

Applied to the vfs.misc branch of the vfs/vfs.git tree.
Patches in the vfs.misc 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.misc

[1/1] fs/aio: obey min_nr when doing wakeups
      https://git.kernel.org/vfs/vfs/c/7a2c359a17b5