linux-kernel - [PATCH 0/4] seqlock: introduce scoped_seqlock_read() and scoped_seqlock_read

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Message-ID: <20251007142043.GA17089@redhat.com>
Date: Tue, 7 Oct 2025 16:20:43 +0200
From: Oleg Nesterov <oleg@...hat.com>
To: Alexander Viro <viro@...iv.linux.org.uk>,
	Boqun Feng <boqun.feng@...il.com>,
	David Howells <dhowells@...hat.com>, Ingo Molnar <mingo@...hat.com>,
	Li RongQing <lirongqing@...du.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Waiman Long <longman@...hat.com>, Will Deacon <will@...nel.org>
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH 0/4] seqlock: introduce scoped_seqlock_read() and
 scoped_seqlock_read_irqsave()

OK, please see V2. scoped_seqlock_read_irqsave() uses the
"for (struct {} s ..." hack to make "ulong flags" local.

I can change scoped_seqlock_read() to do the same, to make
it symmetric with _irqsave() if you think it makes sense.

I've dropped 5/5 which changed __dentry_path() for now.

Oleg.

 fs/proc/array.c         |  9 ++------
 fs/proc/base.c          | 10 ++------
 include/linux/seqlock.h | 61 +++++++++++++++++++++++++++++++++++++++++++++++++
 kernel/sched/cputime.c  | 15 +++---------
 4 files changed, 68 insertions(+), 27 deletions(-)