tree a3ef8dc5e1f34e1a18d755672029bced057885ba
parent 4ffca8904a350460cdaa6304ea8c9b9c693d2d91
author Pavel Butsykin <pbutsykin@virtuozzo.com> 1505738548 +0300
committer Max Reitz <mreitz@redhat.com> 1506430832 +0200

qcow2: add qcow2_cache_discard

Whenever l2/refcount table clusters are discarded from the file we can
automatically drop unnecessary content of the cache tables. This reduces
the chance of eviction useful cache data and eliminates inconsistent data
in the cache with the data in the file.

Signed-off-by: Pavel Butsykin <pbutsykin@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 20170918124230.8152-3-pbutsykin@virtuozzo.com
Signed-off-by: Max Reitz <mreitz@redhat.com>