Hi all,
Sorry for disturb all of you. Here comes my question.
When we close a uring file, we go into io_uring_flush(),
there is codes at the end:
if (!(ctx->flags & IORING_SETUP_SQPOLL) || ctx->sqo_task == current)
io_uring_del_task_file(file);
My understanding, this is to delete the ctx(associated with the uring
file) from current->io_uring->xa.
I'm thinking of this scenario: the task to close uring file is not the
one which created the uring file.
Then it doesn't make sense to delete the uring file from
current->io_uring->xa. It should be "delete uring file from
ctx->sqo_task->io_uring->xa" instead.
