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io_uring: inline ->registered_rings

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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 <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/495f0b953c87994dd9e13de2134019054fa5830d.1655310733.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2022-06-15 17:33:53 +01:00 committed by Jens Axboe
parent 48c13d8980
commit 6a02e4be81
2 changed files with 2 additions and 11 deletions
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10
io_uring/tctx.c
View file

@ -53,7 +53,6 @@ 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;
@ -69,16 +68,8 @@ __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;
}
@ -87,7 +78,6 @@ __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;
}

3
io_uring/tctx.h
View file

@ -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 {