Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
io_uring/cancel: add generic remove_all helper
Any opcode that is cancelable ends up defining its own remove all
helper, which iterates the pending list and cancels matches. Add a
generic helper for it, which can be used by them.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
+25
+21
io_uring/cancel.c
+21
io_uring/cancel.c
···
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fput(file);
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return ret;
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}
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+
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bool io_cancel_remove_all(struct io_ring_ctx *ctx, struct io_uring_task *tctx,
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struct hlist_head *list, bool cancel_all,
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bool (*cancel)(struct io_kiocb *))
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{
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struct hlist_node *tmp;
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struct io_kiocb *req;
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bool found = false;
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lockdep_assert_held(&ctx->uring_lock);
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+
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hlist_for_each_entry_safe(req, tmp, list, hash_node) {
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if (!io_match_task_safe(req, tctx, cancel_all))
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continue;
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hlist_del_init(&req->hash_node);
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if (cancel(req))
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found = true;
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}
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return found;
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}
+4
io_uring/cancel.h
+4
io_uring/cancel.h
···
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int io_sync_cancel(struct io_ring_ctx *ctx, void __user *arg);
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bool io_cancel_req_match(struct io_kiocb *req, struct io_cancel_data *cd);
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+
bool io_cancel_remove_all(struct io_ring_ctx *ctx, struct io_uring_task *tctx,
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struct hlist_head *list, bool cancel_all,
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bool (*cancel)(struct io_kiocb *));
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+
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static inline bool io_cancel_match_sequence(struct io_kiocb *req, int sequence)
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{
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if (req->cancel_seq_set && sequence == req->work.cancel_seq)