fs: replace use of system_wq with system_percpu_wq

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Currently if a user enqueue a work item using schedule_delayed_work() the
used wq is "system_wq" (per-cpu wq) while queue_delayed_work() use
WORK_CPU_UNBOUND (used when a cpu is not specified). The same applies to
schedule_work() that is using system_wq and queue_work(), that makes use
again of WORK_CPU_UNBOUND.

This lack of consistentcy cannot be addressed without refactoring the API.

system_wq is a per-CPU worqueue, yet nothing in its name tells about that
CPU affinity constraint, which is very often not required by users.
Make it clear by adding a system_percpu_wq to all the fs subsystem.

The old wq will be kept for a few release cylces.

Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Marco Crivellari <marco.crivellari@suse.com>
Link: https://lore.kernel.org/20250916082906.77439-3-marco.crivellari@suse.com
Signed-off-by: Christian Brauner <brauner@kernel.org>

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Marco Crivellari 2025-09-16 10:29:05 +02:00 • committed by Christian Brauner

parent 7a4f92d39f

commit 4ef64db060

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6 changed files with 6 additions and 6 deletions

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2

fs/aio.c

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fs/fs-writeback.c

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fs/fuse/dev.c

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fs/fuse/inode.c

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fs/nfs/namespace.c

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fs/nfs/nfs4renewd.c

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