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| author | Fam Zheng <famz@redhat.com> | 2014-09-11 14:09:56 +0800 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2014-09-22 11:39:23 +0100 |
| commit | e819ab22777fd455d5b130afe48c808d35ef7e93 (patch) | |
| tree | 7701c3c369c7c9e03e17e84aca651c679b8d67ac /scripts/qapi-types.py | |
| parent | a90d411e63ef29bb99b984e0fdb7796aeee1c724 (diff) | |
| download | focaccia-qemu-e819ab22777fd455d5b130afe48c808d35ef7e93.tar.gz focaccia-qemu-e819ab22777fd455d5b130afe48c808d35ef7e93.zip | |
block: Introduce "null" drivers
This is an analogue to Linux null_blk. It can be used for testing or benchmarking block device emulation and general block layer functionalities such as coroutines and throttling, where disk IO is not necessary or wanted. Use null-aio:// for AIO version, and null-co:// for coroutine version. [Resolved conflict with Fam's async bdrv_aio_cancel() series: 1. Drop .bdrv_aio_cancel() since it is now done by block.c 2. Rename qemu_aio_release() to qemu_aio_unref() --Stefan] Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: Benoît Canet <benoit.canet@nodalink.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1410415798-20673-2-git-send-email-famz@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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