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authorStefan Hajnoczi <stefanha@linux.vnet.ibm.com>2010-12-06 16:08:01 +0000
committerKevin Wolf <kwolf@redhat.com>2010-12-17 16:11:04 +0100
commit298800cae72eb2a549374189e87615b2b0b79262 (patch)
treefadedcd0842fa60989078a4aa8c1959a27adbbd0 /kvm.h
parent75411d236d93d79d8052e0116c3eeebe23e2778b (diff)
qed: Table, L2 cache, and cluster functions
This patch adds code to look up data cluster offsets in the image via the L1/L2 tables. The L2 tables are writethrough cached in memory for performance (each read/write requires a lookup so it is essential to cache the tables). With cluster lookup code in place it is possible to implement bdrv_is_allocated() to query the number of contiguous allocated/unallocated clusters. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'kvm.h')
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