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Fri, 09 Jan 2026 10:44:29 -0800 (PST) Received: from [192.168.1.102] ([96.43.243.2]) by smtp.gmail.com with ESMTPSA id 586e51a60fabf-3ffa50ecb58sm7303843fac.18.2026.01.09.10.44.28 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 09 Jan 2026 10:44:28 -0800 (PST) Message-ID: <107197ad-1de3-4773-89ad-a3c1977dd7eb@kernel.dk> Date: Fri, 9 Jan 2026 11:44:27 -0700 Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-US To: Linus Torvalds Cc: io-uring From: Jens Axboe Subject: [GIT PULL] io_uring fix for 6.19-rc5 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Hi Linus, Single fix for a regression introduced in 6.15, where a failure to wake up idle io-wq workers at ring exit will wait for the timeout to expire. This isn't normally noticeable, as the exit is async. But if a parent task created a thread that sets up a ring and uses requests that cause io-wq threads to be created, and the parent task then waits for the thread to exit, then it can take 5 seconds for that pthread_join() to succeed as the child thread is waiting for its children to exit. On top of that, just a basic cleanup as well. Please pull! The following changes since commit 70eafc743016b1df73e00fd726ffedd44ce1bdd3: io_uring/memmap: drop unused sz param in io_uring_validate_mmap_request() (2026-01-01 08:16:48 -0700) are available in the Git repository at: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux.git tags/io_uring-6.19-20260109 for you to fetch changes up to e4fdbca2dc774366aca6532b57bfcdaae29aaf63: io_uring/io-wq: remove io_wq_for_each_worker() return value (2026-01-05 15:39:20 -0700) ---------------------------------------------------------------- io_uring-6.19-20260109 ---------------------------------------------------------------- Jens Axboe (2): io_uring/io-wq: fix incorrect io_wq_for_each_worker() termination logic io_uring/io-wq: remove io_wq_for_each_worker() return value io_uring/io-wq.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) -- Jens Axboe