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| author | Vladimir Sementsov-Ogievskiy | 2020-03-11 11:30:03 +0100 |
|---|---|---|
| committer | Max Reitz | 2020-03-11 12:42:30 +0100 |
| commit | 5332e5d21060c48511a73bc5dccd15960f7fa395 (patch) | |
| tree | ae5c660faf23568b389d29e9295a205fe8ffa6a0 /include | |
| parent | block/block-copy: rename start to offset in interfaces (diff) | |
| download | qemu-5332e5d21060c48511a73bc5dccd15960f7fa395.tar.gz qemu-5332e5d21060c48511a73bc5dccd15960f7fa395.tar.xz qemu-5332e5d21060c48511a73bc5dccd15960f7fa395.zip | |
block/block-copy: reduce intersecting request lock
Currently, block_copy operation lock the whole requested region. But
there is no reason to lock clusters, which are already copied, it will
disturb other parallel block_copy requests for no reason.
Let's instead do the following:
Lock only sub-region, which we are going to operate on. Then, after
copying all dirty sub-regions, we should wait for intersecting
requests block-copy, if they failed, we should retry these new dirty
clusters.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
Message-Id: <20200311103004.7649-9-vsementsov@virtuozzo.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions