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| author | Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> | 2010-12-06 16:08:01 +0000 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2010-12-17 16:11:04 +0100 |
| commit | 298800cae72eb2a549374189e87615b2b0b79262 (patch) | |
| tree | fadedcd0842fa60989078a4aa8c1959a27adbbd0 /buffered_file.c | |
| parent | 75411d236d93d79d8052e0116c3eeebe23e2778b (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 'buffered_file.c')
0 files changed, 0 insertions, 0 deletions