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SubjectRe: [PATCH V2 0/4] zram: fix two races and one zram leak
On Wed, Oct 20, 2021 at 02:40:05PM -0700, Minchan Kim wrote:
> On Wed, Oct 20, 2021 at 09:55:44AM +0800, Ming Lei wrote:
> > Hello,
> >
> > Fixes three issues reported by Luis Chamberlain with one simpler approach:
> >
> > - race between between zram_reset_device() and disksize_store() (1/4)
> >
> > - zram leak during unloading module, which is one race between resetting
> > and removing device (2/4)
> >
> > - race between zram_remove and disksize_store (3/4)
> >
> > Also replace replace fsync_bdev with sync_blockdev since no one opens
> > it.(4/4)
> >
> > V2:
> > - take another approach to avoid failing of zram_remove()
> > - add patch to address race between zram_reset_device() and
> > disksize_store()
> >
>
> Thanks for breaking the problems down, Ming.
>
> To me, the whole patchset looks good to me since each patch solves
> the problem step by step and finally fix.
>
> Luis, do you have any concern of this patchset to solve the cpuhp
> problem? (Sorry in advance if I miss some concerns if you raised
> in different thread. I'm totally lost).

Running tests against this now. Will report back!

Luis

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