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block: Add bdrv_co_readv/writev
authorKevin Wolf <kwolf@redhat.com>
Thu, 14 Jul 2011 15:27:13 +0000 (17:27 +0200)
committerKevin Wolf <kwolf@redhat.com>
Tue, 2 Aug 2011 13:53:40 +0000 (15:53 +0200)
commitda1fa91d6cca8a6d3da9c2b222fa485429db297c
treec77f342d36c65fb1773c1f9c563f2d5b531e6f4etree
parent5e3840ce24040cbd1957008489cbc136c43ca391commit | diff
block: Add bdrv_co_readv/writev

Add new block driver callbacks bdrv_co_readv/writev, which work on a
QEMUIOVector like bdrv_aio_*, but don't need a callback. The function may only
be called inside a coroutine, so a block driver implementing this interface can
yield instead of blocking during I/O.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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