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| author | Andrey Shinkevich <andrey.shinkevich@virtuozzo.com> | 2020-12-16 09:16:58 +0300 |
|---|---|---|
| committer | Max Reitz <mreitz@redhat.com> | 2021-01-26 14:36:37 +0100 |
| commit | e275458b29b7040a388ca46af094b0602c769ef1 (patch) | |
| tree | 713c8753f608579d3e08bd138e92ce322a0c9059 /scripts/qapi/introspect.py | |
| parent | 897dd0ec4fdea4e6fa7674729750d05acc1bf41e (diff) | |
| download | focaccia-qemu-e275458b29b7040a388ca46af094b0602c769ef1.tar.gz focaccia-qemu-e275458b29b7040a388ca46af094b0602c769ef1.zip | |
copy-on-read: skip non-guest reads if no copy needed
If the flag BDRV_REQ_PREFETCH was set, skip idling read/write operations in COR-driver. It can be taken into account for the COR-algorithms optimization. That check is being made during the block stream job by the moment. Add the BDRV_REQ_PREFETCH flag to the supported_read_flags of the COR-filter. block: Modify the comment for the flag BDRV_REQ_PREFETCH as we are going to use it alone and pass it to the COR-filter driver for further processing. Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Message-Id: <20201216061703.70908-9-vsementsov@virtuozzo.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'scripts/qapi/introspect.py')
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