On 2019/6/12 下午10:58, David Sterba wrote:
> On Wed, Jun 12, 2019 at 02:36:55PM +0800, Qu Wenruo wrote:
>> Commit 8dcddfa048de ("btrfs: Introduce new mount option usebackuproot to
>> replace recovery") deprecates "recovery" mount option in 2016, and it
>> has been 3 years, it should be OK to remove "recovery" mount option.
>
> Well, that's what we never know if it's ok o not so the deprecated
> options usually stay. Eg. subvolrootid is still there.
>
> 3 years might sound a like a long time but there are old kernels that
> follow the stable branches so I'd rather derive the time to removal from
> that. And eg 4.4 still has the 'recovery' option not among the
> deprecated, same 4.9 and 4.14.
>
> Since 4.19 it's deprecated so we'll have to wait until that is EOL,
> Dec 2020.
>
OK, I'll remove the patch from the patchset for now.
Thanks,
Qu
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