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cd4ea81be3
Commit88e6c42e40("io_uring/io-wq: add check free worker before create new worker") reused the variable `do_create` for something else, abusing it for the free worker check. This caused the value to effectively always be `true` at the time `nr_workers < max_workers` was checked, but it should really be `false`. This means the `max_workers` setting was ignored, and worse: if the limit had already been reached, incrementing `nr_workers` was skipped even though another worker would be created. When later lots of workers exit, the `nr_workers` field could easily underflow, making the problem worse because more and more workers would be created without incrementing `nr_workers`. The simple solution is to use a different variable for the free worker check instead of using one variable for two different things. Cc: stable@vger.kernel.org Fixes:88e6c42e40("io_uring/io-wq: add check free worker before create new worker") Signed-off-by: Max Kellermann <max.kellermann@ionos.com> Reviewed-by: Fengnan Chang <changfengnan@bytedance.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
1480 lines
36 KiB
1480 lines
36 KiB