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The restriction of needing fixed files for SQPOLL is problematic, and prevents/inhibits several valid uses cases. With the referenced files_struct that we have now, it's trivially supportable. Treat ->files like we do the mm for the SQPOLL thread - grab a reference to it (and assign it), and drop it when we're done. This feature is exposed as IORING_FEAT_SQPOLL_NONFIXED. Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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