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Re: [Qemu-devel] [PATCH 24/47] block: introduce new dirty bitmap functio


From: Paolo Bonzini
Subject: Re: [Qemu-devel] [PATCH 24/47] block: introduce new dirty bitmap functionality
Date: Tue, 11 Sep 2012 18:17:26 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:14.0) Gecko/20120801 Thunderbird/14.0

Il 11/09/2012 16:57, Kevin Wolf ha scritto:
>> > Assert that write_compressed is never used with the dirty bitmap.
>> > Setting the bits early is wrong, because a coroutine might concurrently
>> > examine them and copy incomplete data from the source.
>> > 
>> > Signed-off-by: Paolo Bonzini <address@hidden>
> Looks good, but I think it should be documented at least that
> bdrv_get_next_dirty() hangs when it's called and there is no dirty block.

Since bdrv_get_next_dirty disappears soon, I'll just add an assertion.

Paolo



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