From: Hao Xu <haoxu@linux.alibaba.com>
To: Jens Axboe <axboe@kernel.dk>
Cc: io-uring@vger.kernel.org, Pavel Begunkov <asml.silence@gmail.com>,
Joseph Qi <joseph.qi@linux.alibaba.com>
Subject: [PATCH 1/8] io-wq: add helper to merge two wq_lists
Date: Wed, 27 Oct 2021 22:02:09 +0800 [thread overview]
Message-ID: <20211027140216.20008-2-haoxu@linux.alibaba.com> (raw)
In-Reply-To: <20211027140216.20008-1-haoxu@linux.alibaba.com>
add a helper to merge two wq_lists, it will be useful in the next
patches.
Signed-off-by: Hao Xu <haoxu@linux.alibaba.com>
---
fs/io-wq.h | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/fs/io-wq.h b/fs/io-wq.h
index 41bf37674a49..a7b0b505db9d 100644
--- a/fs/io-wq.h
+++ b/fs/io-wq.h
@@ -52,6 +52,27 @@ 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 list0 if list1 is NULL, and vice versa.
+ * Otherwise after merge, list0 contains the merged list.
+ */
+static inline struct io_wq_work_list *wq_list_merge(struct io_wq_work_list *list0,
+ struct io_wq_work_list *list1)
+{
+ if (!list1 || !list1->first)
+ return list0;
+
+ if (!list0 || !list0->first)
+ return list1;
+
+ list0->last->next = list1->first;
+ list0->last = list1->last;
+ return list0;
+}
+
static inline void wq_list_add_tail(struct io_wq_work_node *node,
struct io_wq_work_list *list)
{
--
2.24.4
next prev parent reply other threads:[~2021-10-27 14:02 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-27 14:02 [PATCH for-5.16 v3 0/8] task work optimization Hao Xu
2021-10-27 14:02 ` Hao Xu [this message]
2021-10-27 14:02 ` [PATCH 2/8] io_uring: add a priority tw list for irq completion work Hao Xu
2021-10-27 14:02 ` [PATCH 3/8] io_uring: add helper for task work execution code Hao Xu
2021-10-27 14:02 ` [PATCH 4/8] io_uring: split io_req_complete_post() and add a helper Hao Xu
2021-10-27 14:02 ` [PATCH 5/8] io_uring: move up io_put_kbuf() and io_put_rw_kbuf() Hao Xu
2021-10-27 14:02 ` [PATCH 6/8] io_uring: add nr_ctx to record the number of ctx in a task Hao Xu
2021-10-28 6:27 ` Hao Xu
2021-10-27 14:02 ` [PATCH 7/8] io_uring: batch completion in prior_task_list Hao Xu
2021-10-27 14:02 ` [PATCH 8/8] io_uring: add limited number of TWs to priority task list Hao Xu
2021-10-27 16:39 ` [PATCH for-5.16 v3 0/8] task work optimization Hao Xu
2021-10-27 18:15 ` Pavel Begunkov
2021-10-28 6:07 ` Hao Xu
2021-10-28 11:46 ` Hao Xu
2021-10-28 19:08 ` Pavel Begunkov
2021-10-29 6:18 ` Hao Xu
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