io_uring: fix wrong sequence setting logic

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Sqo_thread will get sqring in batches, which will cause
ctx->cached_sq_head to be added in batches. if one of these
sqes is set with the DRAIN flag, then he will never get a
chance to process, and finally sqo_thread will not exit.

Fixes: de0617e467 ("io_uring: add support for marking commands as draining")
Signed-off-by: Jackie Liu <liuyun01@kylinos.cn>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Jackie Liu 2019-09-09 20:50:39 +08:00 • committed by Jens Axboe

parent ac90f249e1

commit 8776f3fa15

1 changed files with 3 additions and 1 deletions

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fs/io_uring.c

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