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95a8868aef
Add a simple implementation of WriteZeroes for QcowFile that just writes zeroes to allocated clusters and skips clusters that are already unallocated (since they already read back as zeroes). BUG=chromium:850998 TEST=cargo test -p qcow Change-Id: I8f26c8cc4016c129850aaf08c7188dfe08d6dacb Signed-off-by: Daniel Verkamp <dverkamp@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/1187018 Reviewed-by: Dylan Reid <dgreid@chromium.org> Reviewed-by: Zach Reizner <zachr@chromium.org> |
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