Don't make stale zero'ing IO in block device after unlink, since filesystem can reuse the block addresses and issue some IOs. If block layer reordered two IOs, filesystem will see zero data, which crashes filesystem consistency. Bug: 136964285 Test: run cts -m CtsDevicePolicyManagerTestCases -t com.android.cts.devicepolicy.CrossProfileAppsHostSideTest Change-Id: I43c13622d094cecda1c53468adc240002111d605 Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>gugelfrei
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