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12aceb89b0
eventfd is using ->read() as it's file_operations read handler, but this prevents passing in information about whether a given IO operation is blocking or not. We can only use the file flags for that. To support async (-EAGAIN/poll based) retries for io_uring, we need ->read_iter() support. Convert eventfd to using ->read_iter(). With ->read_iter(), we can support IOCB_NOWAIT. Ensure the fd setup is done such that we set file->f_mode with FMODE_NOWAIT. [missing include added] Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
457 lines
12 KiB
457 lines
12 KiB