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Re: [Qemu-block] [PATCH for-2.5] block-migration: limit the memory usage

From: Juan Quintela
Subject: Re: [Qemu-block] [PATCH for-2.5] block-migration: limit the memory usage
Date: Mon, 23 Nov 2015 17:31:33 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux)

Wen Congyang <address@hidden> wrote:
> If we set migration speed in a very large value, block-migration will try to 
> read
> all data to the memory. Because
>     (block_mig_state.submitted + block_mig_state.read_done) * BLOCK_SIZE
> will be overflow, and it will be always less than rate limit.
> There is no need to read too many data into memory when the rate limit is 
> very large.
> So limit the memory usage can fix the overflow problem.
> Signed-off-by: Wen Congyang <address@hidden>

Reviewed-by: Juan Quintela <address@hidden>

If no block layer maintainer objects, I will apply this to my tree.

Later, Juan.

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