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Re: [Qemu-devel] [PATCH v5 0/4] block: ignore flush requests when storag


From: Paolo Bonzini
Subject: Re: [Qemu-devel] [PATCH v5 0/4] block: ignore flush requests when storage is clean
Date: Mon, 4 Jul 2016 16:53:33 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.1.1

On 04/07/2016 16:38, Denis V. Lunev wrote:
> Changes from v4:
> - Moved to write generation scheme instead of dirty flag
> - Added retry setup to IDE PIO and FLUSH requests
> 
> Changes from v3:
> - Fixed a typo in commit message
> - Rebased on Kevin'n origin/block
> 
> Changes from v2:
> - Better comments
> - Rebased on latest master
> 
> Changes from v1:
> - Flush requests that should be skipped will now wait for completion
> of any previous requests already in flight
> - Fixed IDE and AHCI tests to dirty media for new flush behaviour
> - Fixed a problem in IDE CMD_FLUSH_CACHE failure handling
> 
> Signed-off-by: Evgeny Yakovlev <address@hidden>
> Signed-off-by: Denis V. Lunev <address@hidden>
> CC: Kevin Wolf <address@hidden>
> CC: Max Reitz <address@hidden>
> CC: Stefan Hajnoczi <address@hidden>
> CC: Fam Zheng <address@hidden>
> CC: John Snow <address@hidden>
> 
> Evgeny Yakovlev (4):
>   ide: refactor retry_unit set and clear into separate function
>   ide: set retry_unit for PIO and FLUSH requests
>   tests: in IDE and AHCI tests perform DMA write before flushing
>   block: ignore flush requests when storage is clean
> 
>  block.c                   |  3 +++
>  block/io.c                | 18 ++++++++++++++++++
>  hw/ide/core.c             | 24 ++++++++++++++++++------
>  include/block/block_int.h |  5 +++++
>  tests/ahci-test.c         | 34 ++++++++++++++++++++++++++++++++--
>  tests/ide-test.c          | 43 +++++++++++++++++++++++++++++++++++++++++++
>  6 files changed, 119 insertions(+), 8 deletions(-)
> 

Reviewed-by: Paolo Bonzini <address@hidden>

Thanks!

Paolo



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