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From: Hao Xu <[email protected]>
To: [email protected]
Cc: Jens Axboe <[email protected]>, Pavel Begunkov <[email protected]>
Subject: [PATCH 2/3] io_uring: add an io_hash_bucket structure for smaller granularity lock
Date: Mon,  6 Jun 2022 14:57:15 +0800	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>

From: Hao Xu <[email protected]>

Add a new io_hash_bucket structure so that each bucket in cancel_hash
has separate spinlock. This is a prep patch for later use.

Signed-off-by: Hao Xu <[email protected]>
---
 io_uring/cancel.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/io_uring/cancel.h b/io_uring/cancel.h
index 4f35d8696325..b9218310611c 100644
--- a/io_uring/cancel.h
+++ b/io_uring/cancel.h
@@ -4,3 +4,8 @@ int io_async_cancel_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
 int io_async_cancel(struct io_kiocb *req, unsigned int issue_flags);
 
 int io_try_cancel(struct io_kiocb *req, struct io_cancel_data *cd);
+
+struct io_hash_bucket {
+	spinlock_t		lock;
+	struct hlist_head	list;
+};
-- 
2.25.1


  parent reply	other threads:[~2022-06-06  6:57 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-06  6:57 [PATCH v2 0/3] cancel_hash per entry lock Hao Xu
2022-06-06  6:57 ` [PATCH 1/3] io_uring: add hash_index and its logic to track req in cancel_hash Hao Xu
2022-06-06 11:59   ` Pavel Begunkov
2022-06-06 13:47     ` Hao Xu
2022-06-06  6:57 ` Hao Xu [this message]
2022-06-06 11:55   ` [PATCH 2/3] io_uring: add an io_hash_bucket structure for smaller granularity lock Pavel Begunkov
2022-06-06  6:57 ` [PATCH 3/3] io_uring: switch cancel_hash to use per list spinlock Hao Xu
2022-06-06  7:06 ` [PATCH v2 0/3] cancel_hash per entry lock Hao Xu
2022-06-06 12:02   ` Pavel Begunkov
2022-06-06 12:09     ` Pavel Begunkov
2022-06-06 13:39     ` Hao Xu

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