io context: increment task attachment count in ioc_task_link()
Thanks to Nikanth Karthikesan <knikanth@suse.de> for reporting this. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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@ -91,8 +91,10 @@ static inline struct io_context *ioc_task_link(struct io_context *ioc)
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* if ref count is zero, don't allow sharing (ioc is going away, it's
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* if ref count is zero, don't allow sharing (ioc is going away, it's
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* a race).
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* a race).
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*/
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*/
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if (ioc && atomic_inc_not_zero(&ioc->refcount))
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if (ioc && atomic_inc_not_zero(&ioc->refcount)) {
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atomic_inc(&ioc->nr_tasks);
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return ioc;
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return ioc;
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}
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return NULL;
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return NULL;
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}
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}
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