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bdrv_make_empty() is currently only called if the current image represents an external snapshot that has been committed to its base image; it is therefore unlikely to have internal snapshots. In this case, bdrv_make_empty() can be greatly sped up by emptying the L1 and refcount table (while having the dirty flag set, which only works for compat=1.1) and creating a trivial refcount structure. If there are snapshots or for compat=0.10, fall back to the simple implementation (discard all clusters). [Applied s/clusters/cluster/ typo fix suggested by Eric Blake --Stefan] Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1414159063-25977-4-git-send-email-mreitz@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> |
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| .. | ||
| accounting.h | ||
| aio.h | ||
| block_int.h | ||
| block.h | ||
| blockjob.h | ||
| coroutine_int.h | ||
| coroutine.h | ||
| nbd.h | ||
| qapi.h | ||
| scsi.h | ||
| snapshot.h | ||
| thread-pool.h | ||