Daniel Verkamp 46f70e8c16 qcow: optimize sync_caches to avoid extra writes ... Track the clean/dirty state of the L1 table and the refcount table to avoid writing them out and doing an extra fsyncdata() if nothing has changed. BUG=None TEST=Manually verify strace output contains only the expected fsyncs Change-Id: I20bdd250024039a5b4142605462a8977ced1efcc Signed-off-by: Daniel Verkamp <dverkamp@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/1247442 Reviewed-by: Dylan Reid <dgreid@chromium.org>		2018-09-27 19:44:09 -07:00
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src	qcow: optimize sync_caches to avoid extra writes	2018-09-27 19:44:09 -07:00
Cargo.toml	qcow: implement WriteZeroes for QcowFile	2018-09-05 01:25:50 -07:00