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io_uring: remove sqo_task 

Now, sqo_task is used only for a warning that is not interesting anymore
since sqo_dead is gone, remove all of that including ctx->sqo_task.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2021-03-01 13:02:16 +00:00 committed by Jens Axboe
parent 70aacfe661
commit 16270893d7
1 changed files with 0 additions and 10 deletions
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10
fs/io_uring.c
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@ -379,11 +379,6 @@ struct io_ring_ctx {
struct io_rings *rings;
/*
* For SQPOLL usage
*/
struct task_struct *sqo_task;
/* Only used for accounting purposes */
struct mm_struct *mm_account;
@ -8747,10 +8742,6 @@ static int io_uring_add_task_file(struct io_ring_ctx *ctx, struct file *file)
fput(file);
return ret;
}
/* one and only SQPOLL file note, held by sqo_task */
WARN_ON_ONCE((ctx->flags & IORING_SETUP_SQPOLL) &&
current != ctx->sqo_task);
}
tctx->last = file;
}
@ -9376,7 +9367,6 @@ static int io_uring_create(unsigned entries, struct io_uring_params *p,
ctx->compat = in_compat_syscall();
if (!capable(CAP_IPC_LOCK))
ctx->user = get_uid(current_user());
ctx->sqo_task = current;
/*
* This is just grabbed for accounting purposes. When a process exits,