On 6 September 2016 at 14:56, Rafał Miłecki <[email protected]> wrote:
> On 6 September 2016 at 14:50, Miklos Szeredi <[email protected]> wrote:
>> On Tue, Sep 6, 2016 at 1:59 PM, Richard Weinberger <[email protected]> wrote:
>>> overlayfs does not issue a recursive rm on workdir, AFAICT you are supposed
>>> to cleanup
>>> workdir yourself before mounting.
>>> Miklos?
>>
>> Fixed in 4.8-rc5 by
>>
>> eea2fb4851e9 ("ovl: proper cleanup of workdir")
>>
>> I think it's better if kernel does the cleanup, but if it's easier to
>> upgrade userspace, then that's a valid workaround.
>
> Oh, this should solve my problem! It seems it didn't git stable
> kernels yet, but I can backport it on my own for now.
I tried backporting it to 4.4, but it appears it won't be that
trivial. Your patch ("ovl: proper cleanup of workdir") uses e.g.
inode_lock_nested which is available in 4.5+. Commit that added this
function: 5955102c9984f ("wrappers for ->i_mutex access") wasn't
marked for stable, so I guess your patch won't go into 4.4 at all.
I don't expect any magic solution for this, just saying, leaving a
note for reference.
--
Rafał
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