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| author | Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> | 2020-03-11 13:30:03 +0300 |
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| committer | Max Reitz <mreitz@redhat.com> | 2020-03-11 12:42:30 +0100 |
| commit | 5332e5d21060c48511a73bc5dccd15960f7fa395 (patch) | |
| tree | ae5c660faf23568b389d29e9295a205fe8ffa6a0 /hw/usb/dev-serial.c | |
| parent | 8719091f9d591595ea6876d25de9c0956951c513 (diff) | |
| download | focaccia-qemu-5332e5d21060c48511a73bc5dccd15960f7fa395.tar.gz focaccia-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 'hw/usb/dev-serial.c')
0 files changed, 0 insertions, 0 deletions