io_uring: remove unconditional looping in local task_work handling

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[ Upstream commit 9fe3eaea4a ]

If we have a ton of notifications coming in, we can be looping in here
for a long time. This can be problematic for various reasons, mostly
because we can starve userspace. If the application is waiting on N
events, then only re-run if we need more events.

Fixes: c0e0d6ba25 ("io_uring: add IORING_SETUP_DEFER_TASKRUN")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Jens Axboe 2024-01-31 10:50:08 -07:00 • committed by Sasha Levin

parent 8c0a0ae8af

commit 7b8fa7a0c2

1 changed files with 29 additions and 15 deletions

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io_uring/io_uring.c

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