Remove the lock to meet the application scenario.

Fu Juntang

2021-09-03 630a45ed25d1edf37309b842f9109a3283c83be8

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ipcrm -a
rm *.txt
./test_lostdata
sort -n c.txt  > c1.txt
sort -n p.txt  > p1.txt
diff -u p1.txt c1.txt