| commit | a38d2fdd46bf897303acfad96a56be478e55e0c5 | |
| author | Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> | |
| Wed, 22 Sep 2010 13:56:08 +0000 (22 14:56 +0100) | ||
| committer | Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> | |
| Fri, 10 Dec 2010 16:46:09 +0000 (10 16:46 +0000) | ||
| tree | fa44ee6a8e7e390161f94655fcd11e5b485024ee | treesnapshot (tar.gz zip) |
| parent | 3b8d13c70cd9f230017017b9fe23eeca3c551f46 | commitdiff |
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>
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>
| Makefile.objs | diffblobblamehistory | |
| block/qed-cluster.c | [new file with mode: 0644] | blob |
| block/qed-gencb.c | [new file with mode: 0644] | blob |
| block/qed-l2-cache.c | [new file with mode: 0644] | blob |
| block/qed-table.c | [new file with mode: 0644] | blob |
| block/qed.c | diffblobblamehistory | |
| block/qed.h | diffblobblamehistory | |
| trace-events | diffblobblamehistory |