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io_uring: io_rw_reissue lockdep annotations 

We expect io_rw_reissue() to take place only during submission with
uring_lock held. Add a lockdep annotation to check that invariant.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
zero-sugar-mainline-defconfig
Pavel Begunkov 2021-01-08 20:57:22 +00:00 committed by Jens Axboe
parent b1445e59cc
commit 55e6ac1e1f
1 changed files with 2 additions and 0 deletions
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fs/io_uring.c
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@ -2692,6 +2692,8 @@ static bool io_rw_reissue(struct io_kiocb *req, long res)
if ((res != -EAGAIN && res != -EOPNOTSUPP) || io_wq_current_is_worker())
return false;
lockdep_assert_held(&req->ctx->uring_lock);
ret = io_sq_thread_acquire_mm_files(req->ctx, req);
if (io_resubmit_prep(req, ret)) {