Re: [Qemu-devel] [PATCH v7 00/10] block: Protect nested event loop with bdrv_drained_begin and bdrv_drained_end

[Kevin Wolf <kwolf@redhat.com>]

Am 23.10.2015 um 05:08 hat Fam Zheng geschrieben:
> v7: Exclude bdrv_drain and bdrv_qed_drain patches, they'll follow the
>     bdrv_drain fix for bdrv_aio_flush.
>     Fix internal snapshot clean.
> 
> v6: Add Kevin's rev-by in patches 1-3, 6-8, 10, 12.
>     Add Jeff's rev-by in patches 1, 2, 6-8, 10.
>     04: Fix spelling and wording in comments. [Jeff]
>         Add assert at decrement. [Jeff]
>     05: Fix bad rebase. [Jeff]
>     09: Let blk_is_available come first. [Jeff, Kevin]
>     11: Rewrite bdrv_qed_drain. [Jeff]
> 
> v5: Rebase onto Kevin's block tree.
> 
> v4: Rebase on to master so fix the "bdrv_move_feature_fields" issue.
> 
> v3: Call bdrv_drain unconditionally in bdrv_drained_begin.
>     Document the internal I/O implications between bdrv_drain_begin and end.
> 
> The nested aio_poll()'s in block layer has a bug that new r/w requests from
> ioeventfds and nbd exports are processed, which might break the caller's
> semantics (qmp_transaction) or even pointers (bdrv_reopen).

Thanks, applied to the block branch.

Kevin