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io_uring: index io_uring->xa by ctx not file

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We don't use task file notes anymore, and no need left in indexing
task->io_uring->xa by file, and replace it with ctx. It's better
design-wise, especially since we keep a dangling file, and so have to
keep an eye on not dereferencing it.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2021-03-06 11:02:15 +00:00 • committed by Jens Axboe
parent eebd2e37e6
commit baf186c4d3
2 changed files with 12 additions and 14 deletions
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2
include/linux/io_uring.h
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@ -18,7 +18,7 @@ struct io_uring_task {
/* submission side */
struct xarray xa;
struct wait_queue_head wait;
struct file *last;
void *last;
void *io_wq;
struct percpu_counter inflight;
atomic_t in_idle;