From: Kevin Wolf <kwolf@redhat.com>
To: Alberto Garcia <berto@igalia.com>
Cc: qemu-devel@nongnu.org, qemu-block@nongnu.org,
Max Reitz <mreitz@redhat.com>
Subject: Re: [PATCH] qcow2: Return the original error code in qcow2_co_pwrite_zeroes()
Date: Thu, 10 Sep 2020 14:12:48 +0200 [thread overview]
Message-ID: <20200910121248.GF7100@linux.fritz.box> (raw)
In-Reply-To: <20200909123739.719-1-berto@igalia.com>
Am 09.09.2020 um 14:37 hat Alberto Garcia geschrieben:
> This function checks the current status of a (sub)cluster in order to
> see if an unaligned 'write zeroes' request can be done efficiently by
> simply updating the L2 metadata and without having to write actual
> zeroes to disk.
>
> If the situation does not allow using the fast path then the function
> returns -ENOTSUP and the caller falls back to writing zeroes.
>
> If can happen however that the aforementioned check returns an actual
> error code so in this case we should pass it to the caller.
>
> Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
next prev parent reply other threads:[~2020-09-10 12:13 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-09 12:37 [PATCH] qcow2: Return the original error code in qcow2_co_pwrite_zeroes() Alberto Garcia
2020-09-09 16:31 ` Eric Blake
2020-09-09 16:41 ` Philippe Mathieu-Daudé
2020-09-10 12:12 ` Kevin Wolf [this message]
2020-09-11 9:00 ` Max Reitz
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