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由 Jackie Liu 提交于
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: de0617e4 ("io_uring: add support for marking commands as draining") Signed-off-by: NJackie Liu <liuyun01@kylinos.cn> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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