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Pádraig Brady
6203f8f978
The previous commit is not sufficient to fix the race, since I forgot shred now opens with O_NONBLOCK, and so cat may not be even reading by the time shred's open() returns. * tests/shred/fifo.sh: Put more robust synchronization in place along the lines of what we did in commit v9.11-47-ga6ba6a23a, using a separate fifo_writer_ to ensure the cat is reading, before shred runs.