56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
#ifndef INTERNAL_IO_WQ_H
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#define INTERNAL_IO_WQ_H
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struct io_wq;
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enum {
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IO_WQ_WORK_CANCEL = 1,
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IO_WQ_WORK_HAS_MM = 2,
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IO_WQ_WORK_HASHED = 4,
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IO_WQ_WORK_NEEDS_USER = 8,
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IO_WQ_HASH_SHIFT = 24, /* upper 8 bits are used for hash key */
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};
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enum io_wq_cancel {
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IO_WQ_CANCEL_OK, /* cancelled before started */
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IO_WQ_CANCEL_RUNNING, /* found, running, and attempted cancelled */
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IO_WQ_CANCEL_NOTFOUND, /* work not found */
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};
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struct io_wq_work {
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struct list_head list;
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void (*func)(struct io_wq_work **);
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unsigned flags;
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};
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#define INIT_IO_WORK(work, _func) \
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do { \
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(work)->func = _func; \
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(work)->flags = 0; \
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} while (0) \
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struct io_wq *io_wq_create(unsigned concurrency, struct mm_struct *mm);
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void io_wq_destroy(struct io_wq *wq);
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void io_wq_enqueue(struct io_wq *wq, struct io_wq_work *work);
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void io_wq_enqueue_hashed(struct io_wq *wq, struct io_wq_work *work, void *val);
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void io_wq_flush(struct io_wq *wq);
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void io_wq_cancel_all(struct io_wq *wq);
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enum io_wq_cancel io_wq_cancel_work(struct io_wq *wq, struct io_wq_work *cwork);
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#if defined(CONFIG_IO_WQ)
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extern void io_wq_worker_sleeping(struct task_struct *);
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extern void io_wq_worker_running(struct task_struct *);
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#else
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static inline void io_wq_worker_sleeping(struct task_struct *tsk)
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{
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}
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static inline void io_wq_worker_running(struct task_struct *tsk)
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{
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}
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#endif
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#endif
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