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authorKevin Wolf <kwolf@redhat.com>2011-01-26 16:56:48 +0100
committerKevin Wolf <kwolf@redhat.com>2011-01-31 10:03:00 +0100
commit5ea929e3d13622e5d06ca8795819f1590644cda2 (patch)
tree1aba3562b30cf62ac6a8fdc5f313f4a90e816c88 /notify.c
parenta9c49a6b023fd3706002fd8d549c58f0343932f8 (diff)
qcow2: Add bdrv_discard support
This adds a bdrv_discard function to qcow2 that frees the discarded clusters. It does not yet pass the discard on to the underlying file system driver, but the space can be reused by future writes to the image. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
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