linux-kernel - Re: [PATCH v3] eventfd: move 'eventfd-count' printing out of spinlock

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Message-ID: <20240123-rinnsal-entbunden-bfdb1dedb29d@brauner>
Date: Tue, 23 Jan 2024 16:55:15 +0100
From: Christian Brauner <brauner@...nel.org>
To: wenyang.linux@...mail.com
Cc: Christian Brauner <brauner@...nel.org>,
	Christoph Hellwig <hch@....de>,
	Dylan Yudaken <dylany@...com>,
	David Woodhouse <dwmw@...zon.co.uk>,
	Matthew Wilcox <willy@...radead.org>,
	Eric Biggers <ebiggers@...gle.com>,
	linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Jens Axboe <axboe@...nel.dk>,
	Alexander Viro <viro@...iv.linux.org.uk>
Subject: Re: [PATCH v3] eventfd: move 'eventfd-count' printing out of spinlock

On Mon, 15 Jan 2024 23:27:00 +0800, wenyang.linux@...mail.com wrote:
> When printing eventfd->count, interrupts will be disabled and a spinlock
> will be obtained, competing with eventfd_write(). By moving the
> "eventfd-count" print out of the spinlock and merging multiple
> seq_printf() into one, it could improve a bit, just like timerfd_show().
> 
> 

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] eventfd: move 'eventfd-count' printing out of spinlock
      https://git.kernel.org/vfs/vfs/c/294a229020f1