Re: [Qemu-devel] [PATCH 0/8] block: Introduce common read/write function

[Kevin Wolf]

Am 08.03.2016 um 13:47 hat Kevin Wolf geschrieben:
> BlockBackends support a few different interfaces for reads and writes. Until
> now they used to forward the requests directly to the BDS layer, which
> implemented wrappers around one central common read/write function that
> contained the actual implementation of features provided by the block layer.
> 
> This only works as long as none of the features are actually on the
> BlockBackend level. As it happens, we have features (writethrough cache, I/O
> throttling) that are currently implemented in the BDS, but must move to the 
> BB.
> 
> As a preparation, this series introduces the mapping of the existing APIs to a
> single coroutine based preadv/pwritev function (as we already have on the BDS
> level) to the BB layer. The BDS version of the emulation can't go away just 
> yet
> because there are internal users of them, but the goal is to remove them in 
> the
> long term.
> 
> Depends on Max's "blockdev: Further BlockBackend work".

Applied to the block branch.

Kevin