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io_uring: remove io_register_submitter 

this is no longer needed, as submitter_task is set at creation time.

Signed-off-by: Dylan Yudaken <dylany@fb.com>
Fixes: 97bbdc06a4 ("io_uring: add IORING_SETUP_SINGLE_ISSUER")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Dylan Yudaken 2022-09-26 10:09:27 -07:00 committed by Jens Axboe
parent 97c96e9fa3
commit 4add705e4e
1 changed files with 3 additions and 19 deletions
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22
io_uring/tctx.c
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@ -91,20 +91,6 @@ __cold int io_uring_alloc_task_context(struct task_struct *task,
return 0; return 0;
} }
static int io_register_submitter(struct io_ring_ctx *ctx)
{
int ret = 0;
mutex_lock(&ctx->uring_lock);
if (!ctx->submitter_task)
ctx->submitter_task = get_task_struct(current);
else if (ctx->submitter_task != current)
ret = -EEXIST;
mutex_unlock(&ctx->uring_lock);
return ret;
}
int __io_uring_add_tctx_node(struct io_ring_ctx *ctx) int __io_uring_add_tctx_node(struct io_ring_ctx *ctx)
{ {
struct io_uring_task *tctx = current->io_uring; struct io_uring_task *tctx = current->io_uring;
@ -151,11 +137,9 @@ int __io_uring_add_tctx_node_from_submit(struct io_ring_ctx *ctx)
{ {
int ret; int ret;
if (ctx->flags & IORING_SETUP_SINGLE_ISSUER) { if (ctx->flags & IORING_SETUP_SINGLE_ISSUER
ret = io_register_submitter(ctx); && ctx->submitter_task != current)
if (ret) return -EEXIST;
return ret;
}
ret = __io_uring_add_tctx_node(ctx); ret = __io_uring_add_tctx_node(ctx);
if (ret) if (ret)