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Re: [Qemu-devel] [PATCH v5 02/11] block: add bdrv_add_before_write_notif
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From: |
Kevin Wolf |
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Subject: |
Re: [Qemu-devel] [PATCH v5 02/11] block: add bdrv_add_before_write_notifier() |
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Date: |
Wed, 19 Jun 2013 12:56:07 +0200 |
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User-agent: |
Mutt/1.5.21 (2010-09-15) |
Am 30.05.2013 um 14:34 hat Stefan Hajnoczi geschrieben:
> The bdrv_add_before_write_notifier() function installs a callback that
> is invoked before a write request is processed. This will be used to
> implement copy-on-write point-in-time snapshots where we need to copy
> out old data before overwriting it.
>
> Note that BdrvTrackedRequest is moved to block_int.h since it is passed
> to .notify() functions.
>
> Signed-off-by: Stefan Hajnoczi <address@hidden>
Reviewed-by: Kevin Wolf <address@hidden>
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