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Re: [Qemu-devel] [PATCH for-2.6 1/2] block/mirror: Revive dead yielding

From: Kevin Wolf
Subject: Re: [Qemu-devel] [PATCH for-2.6 1/2] block/mirror: Revive dead yielding code
Date: Wed, 20 Apr 2016 14:15:37 +0200
User-agent: Mutt/1.5.21 (2010-09-15)

Am 20.04.2016 um 00:59 hat Max Reitz geschrieben:
> mirror_iteration() is supposed to wait if the current chunk is subject
> to a still in-flight mirroring operation. However, it mixed checking
> this conflict situation with checking the dirty status of a chunk. A
> simplification for the latter condition (the first chunk encountered is
> always dirty) led to neglecting the former: We just skip the first chunk
> and thus never test whether it conflicts with an in-flight operation.
> To fix this, pull out the code which waits for in-flight operations on
> the first chunk of the range to be mirrored to settle.
> Signed-off-by: Max Reitz <address@hidden>

Reviewed-by: Kevin Wolf <address@hidden>

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