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From: Pavel Begunkov <[email protected]>
To: [email protected]
Cc: Jens Axboe <[email protected]>, [email protected]
Subject: [PATCH for-next v2 07/25] io_uring: inline ->registered_rings
Date: Tue, 14 Jun 2022 15:36:57 +0100	[thread overview]
Message-ID: <6f9e5a5c3bddf92c848664230c9a0ecaf846950e.1655213915.git.asml.silence@gmail.com> (raw)
In-Reply-To: <[email protected]>

There can be only 16 registered rings, no need to allocate an array for
them separately but store it in tctx.

Signed-off-by: Pavel Begunkov <[email protected]>
---
 io_uring/io_uring.c | 1 -
 io_uring/tctx.c     | 9 ---------
 io_uring/tctx.h     | 3 ++-
 3 files changed, 2 insertions(+), 11 deletions(-)

diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index 3fdb368820c9..dbf0dbc87758 100644
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -2840,7 +2840,6 @@ void __io_uring_free(struct task_struct *tsk)
 	WARN_ON_ONCE(tctx->io_wq);
 	WARN_ON_ONCE(tctx->cached_refs);
 
-	kfree(tctx->registered_rings);
 	percpu_counter_destroy(&tctx->inflight);
 	kfree(tctx);
 	tsk->io_uring = NULL;
diff --git a/io_uring/tctx.c b/io_uring/tctx.c
index f3262eef55d4..6adf659687f8 100644
--- a/io_uring/tctx.c
+++ b/io_uring/tctx.c
@@ -55,16 +55,8 @@ __cold int io_uring_alloc_task_context(struct task_struct *task,
 	if (unlikely(!tctx))
 		return -ENOMEM;
 
-	tctx->registered_rings = kcalloc(IO_RINGFD_REG_MAX,
-					 sizeof(struct file *), GFP_KERNEL);
-	if (unlikely(!tctx->registered_rings)) {
-		kfree(tctx);
-		return -ENOMEM;
-	}
-
 	ret = percpu_counter_init(&tctx->inflight, 0, GFP_KERNEL);
 	if (unlikely(ret)) {
-		kfree(tctx->registered_rings);
 		kfree(tctx);
 		return ret;
 	}
@@ -73,7 +65,6 @@ __cold int io_uring_alloc_task_context(struct task_struct *task,
 	if (IS_ERR(tctx->io_wq)) {
 		ret = PTR_ERR(tctx->io_wq);
 		percpu_counter_destroy(&tctx->inflight);
-		kfree(tctx->registered_rings);
 		kfree(tctx);
 		return ret;
 	}
diff --git a/io_uring/tctx.h b/io_uring/tctx.h
index f4964e40d07e..7684713e950f 100644
--- a/io_uring/tctx.h
+++ b/io_uring/tctx.h
@@ -20,8 +20,9 @@ struct io_uring_task {
 	struct io_wq_work_list	task_list;
 	struct io_wq_work_list	prio_task_list;
 	struct callback_head	task_work;
-	struct file		**registered_rings;
 	bool			task_running;
+
+	struct file		*registered_rings[IO_RINGFD_REG_MAX];
 };
 
 struct io_tctx_node {
-- 
2.36.1


  parent reply	other threads:[~2022-06-14 14:37 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-14 14:36 [PATCH for-next v2 00/25] 5.20 cleanups and poll optimisations Pavel Begunkov
2022-06-14 14:36 ` [PATCH for-next v2 01/25] io_uring: make reg buf init consistent Pavel Begunkov
2022-06-14 14:36 ` [PATCH for-next v2 02/25] io_uring: move defer_list to slow data Pavel Begunkov
2022-06-14 14:36 ` [PATCH for-next v2 03/25] io_uring: better caching for ctx timeout fields Pavel Begunkov
2022-06-14 14:36 ` [PATCH for-next v2 04/25] io_uring: refactor ctx slow data placement Pavel Begunkov
2022-06-15  7:58   ` Hao Xu
2022-06-15 10:11     ` Pavel Begunkov
2022-06-15 10:59       ` Hao Xu
2022-06-14 14:36 ` [PATCH for-next v2 05/25] io_uring: move small helpers to headers Pavel Begunkov
2022-06-14 14:36 ` [PATCH for-next v2 06/25] io_uring: explain io_wq_work::cancel_seq placement Pavel Begunkov
2022-06-14 14:36 ` Pavel Begunkov [this message]
2022-06-14 14:36 ` [PATCH for-next v2 08/25] io_uring: don't set REQ_F_COMPLETE_INLINE in tw Pavel Begunkov
2022-06-14 14:36 ` [PATCH for-next v2 09/25] io_uring: never defer-complete multi-apoll Pavel Begunkov
2022-06-15  8:05   ` Hao Xu
2022-06-14 14:37 ` [PATCH for-next v2 10/25] io_uring: kill REQ_F_COMPLETE_INLINE Pavel Begunkov
2022-06-15  8:20   ` Hao Xu
2022-06-15 10:18     ` Pavel Begunkov
2022-06-15 10:19       ` Pavel Begunkov
2022-06-14 14:37 ` [PATCH for-next v2 11/25] io_uring: refactor io_req_task_complete() Pavel Begunkov
2022-06-14 17:45   ` Hao Xu
2022-06-14 17:52     ` Pavel Begunkov
2022-06-14 14:37 ` [PATCH for-next v2 12/25] io_uring: don't inline io_put_kbuf Pavel Begunkov
2022-06-14 14:37 ` [PATCH for-next v2 13/25] io_uring: remove check_cq checking from hot paths Pavel Begunkov
2022-06-14 14:37 ` [PATCH for-next v2 14/25] io_uring: poll: remove unnecessary req->ref set Pavel Begunkov
2022-06-14 14:37 ` [PATCH for-next v2 15/25] io_uring: switch cancel_hash to use per entry spinlock Pavel Begunkov
2022-06-14 14:37 ` [PATCH for-next v2 16/25] io_uring: pass poll_find lock back Pavel Begunkov
2022-06-14 14:37 ` [PATCH for-next v2 17/25] io_uring: clean up io_try_cancel Pavel Begunkov
2022-06-14 14:37 ` [PATCH for-next v2 18/25] io_uring: limit number hash buckets Pavel Begunkov
2022-06-14 14:37 ` [PATCH for-next v2 19/25] io_uring: clean up io_ring_ctx_alloc Pavel Begunkov
2022-06-15  8:46   ` Hao Xu
2022-06-14 14:37 ` [PATCH for-next v2 20/25] io_uring: use state completion infra for poll reqs Pavel Begunkov
2022-06-14 14:37 ` [PATCH for-next v2 21/25] io_uring: add IORING_SETUP_SINGLE_ISSUER Pavel Begunkov
2022-06-15  9:34   ` Hao Xu
2022-06-15 10:20     ` Pavel Begunkov
2022-06-15  9:41   ` Hao Xu
2022-06-15 10:26     ` Pavel Begunkov
2022-06-15 11:08       ` Hao Xu
2022-06-14 14:37 ` [PATCH for-next v2 22/25] io_uring: pass hash table into poll_find Pavel Begunkov
2022-06-14 14:37 ` [PATCH for-next v2 23/25] io_uring: introduce a struct for hash table Pavel Begunkov
2022-06-14 14:37 ` [PATCH for-next v2 24/25] io_uring: propagate locking state to poll cancel Pavel Begunkov
2022-06-14 14:37 ` [PATCH for-next v2 25/25] io_uring: mutex locked poll hashing Pavel Begunkov
2022-06-15 12:53   ` Hao Xu
2022-06-15 13:55     ` Pavel Begunkov
2022-06-15 15:19       ` Hao Xu

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