Age | Commit message (Collapse) | Author | Files | Lines | |
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2010-12-17 | qed: Table, L2 cache, and cluster functions | Stefan Hajnoczi | 1 | -0/+173 | |
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> |