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Re: [Qemu-stable] [PATCH 0/2] block/file-posix: Reduce xfsctl() use
From: |
Kevin Wolf |
Subject: |
Re: [Qemu-stable] [PATCH 0/2] block/file-posix: Reduce xfsctl() use |
Date: |
Mon, 2 Sep 2019 15:17:01 +0200 |
User-agent: |
Mutt/1.11.3 (2019-02-01) |
Am 23.08.2019 um 15:03 hat Max Reitz geschrieben:
> Hi,
>
> As suggested by Paolo, this series drops xfsctl() calls where we have
> working fallocate() alternatives. (And thus replaces “block/file-posix:
> Fix xfs_write_zeroes()”.)
>
> Unfortunately, we also use xfsctl() to inquire the request alignment for
> O_DIRECT, and this is the only way we currently have to obtain it
> without trying. Therefore, I didn’t quite like removing that call, too,
> so this series doesn’t get rid of xfsctl() completely.
>
> (If we did, we could delete 146 lines instead of these measly 76 here.)
>
>
> Anyway, dropping xfs_write_zeroes() will also fix the guest corruptions
> Lukáš has reported (for qcow2, but I think it should be possible to see
> similar corruptions with raw, although I haven’t investigated that too
> far).
Thanks, applied to the block branch.
Kevin
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