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authorPavel Butsykin <pbutsykin@virtuozzo.com>2017-09-18 15:42:28 +0300
committerMax Reitz <mreitz@redhat.com>2017-09-26 15:00:32 +0200
commitf71c08ea8e60f035485a512fd2af8908567592f0 (patch)
treea3ef8dc5e1f34e1a18d755672029bced057885ba /pc-bios
parent4ffca8904a350460cdaa6304ea8c9b9c693d2d91 (diff)
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>
Diffstat (limited to 'pc-bios')
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