Daniel Verkamp b1570f2672 qcow: track deallocated clusters as unreferenced ... In deallocate_cluster(), we call set_cluster_refcount() to unref the cluster that is being deallocated, but we never actually added the deallocated cluster to the unref_clusters list. Add clusters whose refcounts reach 0 to the unref_clusters list as well. Also add mremap() to the seccomp whitelist for the block device, since this is being triggered by libc realloc() and other devices already include it in the whitelist. BUG=chromium:850998 TEST=cargo test -p qcow; test crosvm on nami and verify that qcow file size stays bounded when creating a 1 GB file and deleting it repeatedly Change-Id: I1bdd96b2176dc13069417e0ac77f0768f9f26012 Signed-off-by: Daniel Verkamp <dverkamp@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/1259404 Reviewed-by: Dylan Reid <dgreid@chromium.org>		2018-10-05 07:54:49 -07:00
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src	qcow: track deallocated clusters as unreferenced	2018-10-05 07:54:49 -07:00
Cargo.toml	qcow: implement WriteZeroes for QcowFile	2018-09-05 01:25:50 -07:00