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 2/8] io-wq: add helper to merge two wq_lists
Date: Mon, 27 Sep 2021 14:17:15 +0800 [thread overview]
Message-ID: <20210927061721.180806-3-haoxu@linux.alibaba.com> (raw)
In-Reply-To: <20210927061721.180806-1-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 | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/fs/io-wq.h b/fs/io-wq.h
index 8369a51b65c0..7510b05d4a86 100644
--- a/fs/io-wq.h
+++ b/fs/io-wq.h
@@ -39,6 +39,26 @@ 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
+ * after merge, list0 contains the merged list.
+ */
+static inline void wq_list_merge(struct io_wq_work_list *list0,
+ struct io_wq_work_list *list1)
+{
+ if (!list1)
+ return;
+
+ if (!list0) {
+ list0 = list1;
+ return;
+ }
+ list0->last->next = list1->first;
+ list0->last = list1->last;
+}
+
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:[~2021-09-27 6:17 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-27 6:17 [PATCH 0/6] task_work optimization Hao Xu
2021-09-27 6:17 ` [PATCH 1/8] io-wq: code clean for io_wq_add_work_after() Hao Xu
2021-09-28 11:08 ` Pavel Begunkov
2021-09-29 7:36 ` Hao Xu
2021-09-29 11:23 ` Pavel Begunkov
2021-09-27 6:17 ` Hao Xu [this message]
2021-09-27 10:17 ` [PATCH 2/8] io-wq: add helper to merge two wq_lists Hao Xu
2021-09-28 11:10 ` Pavel Begunkov
2021-09-28 16:48 ` Hao Xu
2021-09-29 11:23 ` Pavel Begunkov
2021-09-27 6:17 ` [PATCH 3/8] io_uring: add a limited tw list for irq completion work Hao Xu
2021-09-28 11:29 ` Pavel Begunkov
2021-09-28 16:55 ` Hao Xu
2021-09-29 11:25 ` Pavel Begunkov
2021-09-29 11:38 ` Hao Xu
2021-09-30 9:02 ` Pavel Begunkov
2021-09-30 3:21 ` Hao Xu
2021-09-27 6:17 ` [PATCH 4/8] io_uring: add helper for task work execution code Hao Xu
2021-09-27 6:17 ` [PATCH 5/8] io_uring: split io_req_complete_post() and add a helper Hao Xu
2021-09-27 6:17 ` [PATCH 6/8] io_uring: move up io_put_kbuf() and io_put_rw_kbuf() Hao Xu
2021-09-27 6:17 ` [PATCH 7/8] io_uring: add tw_ctx for io_uring_task Hao Xu
2021-09-27 6:17 ` [PATCH 8/8] io_uring: batch completion in prior_task_list Hao Xu
2021-09-27 6:21 ` [PATCH 0/6] task_work optimization Hao Xu
2021-09-27 10:51 [PATCH v2 0/8] " Hao Xu
2021-09-27 10:51 ` [PATCH 2/8] io-wq: add helper to merge two wq_lists Hao Xu
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