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From: Hao Xu <[email protected]>
To: Jens Axboe <[email protected]>
Cc: [email protected], Pavel Begunkov <[email protected]>,
	Joseph Qi <[email protected]>
Subject: [PATCH 1/6] io-wq: add helper to merge two wq_lists
Date: Fri, 26 Nov 2021 18:07:35 +0800	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>

add a helper to merge two wq_lists, it will be useful in the next
patches.

Reviewed-by: Pavel Begunkov <[email protected]>
Signed-off-by: Hao Xu <[email protected]>
---
 fs/io-wq.h | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/fs/io-wq.h b/fs/io-wq.h
index 41bf37674a49..3709b7c5ec98 100644
--- a/fs/io-wq.h
+++ b/fs/io-wq.h
@@ -52,6 +52,28 @@ static inline void wq_list_add_after(struct io_wq_work_node *node,
 		list->last = node;
 }
 
+/**
+ * wq_list_merge - merge the second list to the first one.
+ * @list0: the first list
+ * @list1: the second list
+ * Return the first node after mergence.
+ */
+static inline struct io_wq_work_node *wq_list_merge(struct io_wq_work_list *list0,
+						    struct io_wq_work_list *list1)
+{
+	struct io_wq_work_node *ret;
+
+	if (!list0->first) {
+		ret = list1->first;
+	} else {
+		ret = list0->first;
+		list0->last->next = list1->first;
+	}
+	INIT_WQ_LIST(list0);
+	INIT_WQ_LIST(list1);
+	return ret;
+}
+
 static inline void wq_list_add_tail(struct io_wq_work_node *node,
 				    struct io_wq_work_list *list)
 {
-- 
2.24.4


  reply	other threads:[~2021-11-26 10:09 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-26 10:07 [PATCH v6 0/6] task work optimization Hao Xu
2021-11-26 10:07 ` Hao Xu [this message]
2021-11-26 10:07 ` [PATCH 2/6] io_uring: add a priority tw list for irq completion work Hao Xu
2021-11-26 10:07 ` [PATCH 3/6] io_uring: add helper for task work execution code Hao Xu
2021-11-26 10:07 ` [PATCH 4/6] io_uring: split io_req_complete_post() and add a helper Hao Xu
2021-11-26 10:07 ` [PATCH 5/6] io_uring: move up io_put_kbuf() and io_put_rw_kbuf() Hao Xu
2021-11-26 10:07 ` [PATCH 6/6] io_uring: batch completion in prior_task_list Hao Xu
2021-11-26 12:56   ` Hao Xu
2021-11-26 13:37 ` [PATCH RESEND " Hao Xu
2021-11-27 15:24   ` [PATCH v7] " Hao Xu
2021-11-28 15:28     ` Pavel Begunkov
2021-12-03  1:39 ` [PATCH v6 0/6] task work optimization Pavel Begunkov
2021-12-03  2:01   ` Pavel Begunkov
2021-12-03  7:30     ` Hao Xu
2021-12-03 14:21       ` Pavel Begunkov
2021-12-05 15:02         ` Hao Xu
2021-12-05 15:42           ` Pavel Begunkov
2021-12-06  8:35             ` Hao Xu
2021-12-06  9:48               ` Hao Xu
2021-12-03  3:24   ` Hao Xu
2021-12-04 20:58 ` Pavel Begunkov
2021-12-05 15:11   ` Hao Xu
  -- strict thread matches above, loose matches on Subject: below --
2021-11-24 12:21 [PATCH v5 " Hao Xu
2021-11-24 12:21 ` [PATCH 1/6] io-wq: add helper to merge two wq_lists Hao Xu
2021-10-29 12:22 [PATCH for-5.16 v4 0/6] task work optimization Hao Xu
2021-10-29 12:22 ` [PATCH 1/6] io-wq: add helper to merge two wq_lists Hao Xu
2021-11-17 22:41   ` Pavel Begunkov

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