Hi Andrew,
I am not sure if you had seen this. So make a ping.
在 2022/7/1 13:14, Shiyang Ruan 写道:
>
>
> 在 2022/7/1 8:31, Darrick J. Wong 写道:
>> On Thu, Jun 09, 2022 at 10:34:35PM +0800, Shiyang Ruan wrote:
>>> Failure notification is not supported on partitions. So, when we mount
>>> a reflink enabled xfs on a partition with dax option, let it fail with
>>> -EINVAL code.
>>>
>>> Signed-off-by: Shiyang Ruan <ruansy.fnst@xxxxxxxxxxx>
>>
>> Looks good to me, though I think this patch applies to ... wherever all
>> those rmap+reflink+dax patches went. I think that's akpm's tree, right?
>
> Yes, they are in his tree, still in mm-unstable now.
>
>>
>> Ideally this would go in through there to keep the pieces together, but
>> I don't mind tossing this in at the end of the 5.20 merge window if akpm
>> is unwilling.
What's your opinion on this? I found that the rmap+reflink+dax patches have been merged into mm-stable, so maybe it's a bit late to merge this one. ( I'm not pushing, just to know the situation. )
--
Thanks,
Ruan.
>
> Both are fine to me. Thanks!
>
>
> --
> Ruan.
>
>>
>> Reviewed-by: Darrick J. Wong <djwong@xxxxxxxxxx>
>>
>> --D
>>
>>> ---
>>> fs/xfs/xfs_super.c | 6 ++++--
>>> 1 file changed, 4 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
>>> index 8495ef076ffc..a3c221841fa6 100644
>>> --- a/fs/xfs/xfs_super.c
>>> +++ b/fs/xfs/xfs_super.c
>>> @@ -348,8 +348,10 @@ xfs_setup_dax_always(
>>> goto disable_dax;
>>> }
>>> - if (xfs_has_reflink(mp)) {
>>> - xfs_alert(mp, "DAX and reflink cannot be used together!");
>>> + if (xfs_has_reflink(mp) &&
>>> + bdev_is_partition(mp->m_ddev_targp->bt_bdev)) {
>>> + xfs_alert(mp,
>>> + "DAX and reflink cannot work with multi-partitions!");
>>> return -EINVAL;
>>> }
>>> --
>>> 2.36.1
>>>
>>>
>>>
>
>
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