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| author | Marco Crivellari <marco.crivellari@suse.com> | 2025-09-05 10:51:40 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2025-09-09 09:11:31 -0600 |
| commit | 456cefcb312d90d12dbcf7eaf6b3f7cfae6f622b (patch) | |
| tree | 99a56a129ae07bcd22ee2e7259dc2631bf1b17a9 /drivers/block | |
| parent | drivers/block: replace use of system_wq with system_percpu_wq (diff) | |
| download | linux-456cefcb312d90d12dbcf7eaf6b3f7cfae6f622b.tar.gz linux-456cefcb312d90d12dbcf7eaf6b3f7cfae6f622b.zip | |
drivers/block: replace use of system_unbound_wq with system_dfl_wq
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_unbound_wq should be the default workqueue so as not to enforce
locality constraints for random work whenever it's not required.
Adding system_dfl_wq to encourage its use when unbound work should be used.
queue_work() / queue_delayed_work() / mod_delayed_work() will now use the
new unbound wq: whether the user still use the old wq a warn will be
printed along with a wq redirect to the new one.
The old system_unbound_wq will be kept for a few release cycles.
Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Marco Crivellari <marco.crivellari@suse.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/zram/zram_drv.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index 8acad3cc6e6e..78184d3c526a 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -1085,7 +1085,7 @@ static int read_from_bdev_sync(struct zram *zram, struct page *page, work.entry = entry; INIT_WORK_ONSTACK(&work.work, zram_sync_read); - queue_work(system_unbound_wq, &work.work); + queue_work(system_dfl_wq, &work.work); flush_work(&work.work); destroy_work_on_stack(&work.work); |