| commit | 298800cae72eb2a549374189e87615b2b0b79262 | |
| author | Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> | |
| Mon, 6 Dec 2010 16:08:01 +0000 (6 16:08 +0000) | ||
| committer | Kevin Wolf <kwolf@redhat.com> | |
| Fri, 17 Dec 2010 15:11:04 +0000 (17 16:11 +0100) | ||
| tree | fadedcd0842fa60989078a4aa8c1959a27adbbd0 | treesnapshot (tar.gz zip) |
| parent | 75411d236d93d79d8052e0116c3eeebe23e2778b | 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>
Signed-off-by: Kevin Wolf <kwolf@redhat.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>
Signed-off-by: Kevin Wolf <kwolf@redhat.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 |