qemu-e2k/qapi
Fam Zheng e819ab2277 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>
2014-09-22 11:39:23 +01:00
..
block-core.json block: Introduce "null" drivers 2014-09-22 11:39:23 +01:00
block.json qapi event: convert DEVICE_TRAY_MOVED 2014-06-23 11:12:27 -04:00
common.json qapi: Extract qapi/common.json definitions 2014-06-06 16:25:48 +02:00
event.json qapi: Change back sector-count to sectors-count in quorum QAPI events. 2014-07-01 10:15:34 +02:00
Makefile.objs rename parse_enum_option to qapi_enum_parse and make it public 2014-09-08 11:12:43 +01:00
opts-visitor.c QemuOpts: change opt->name|str from (const char *) to (char *) 2014-06-16 17:23:20 +08:00
qapi-dealloc-visitor.c
qapi-util.c rename parse_enum_option to qapi_enum_parse and make it public 2014-09-08 11:12:43 +01:00
qapi-visit-core.c qapi: Replace uncommon use of the error API by the common one 2014-05-15 14:00:46 -04:00
qmp-dispatch.c
qmp-event.c qapi: add event helper functions 2014-06-23 11:01:25 -04:00
qmp-input-visitor.c
qmp-output-visitor.c qapi: Avoid output visitor crashing if it encounters a NULL value 2014-05-28 17:36:04 +02:00
qmp-registry.c
string-input-visitor.c qapi: fix input visitor bugs 2014-06-19 18:44:22 +03:00
string-output-visitor.c qapi/string-output-visitor: fix human output 2014-06-23 17:38:00 +03:00