linux-kernel - Re: [PATCH V3 0/4] zram: fix two races and one zram leak

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Date:   Mon, 1 Nov 2021 08:28:13 +0800
From:   Ming Lei <ming.lei@...hat.com>
To:     Minchan Kim <minchan@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Jens Axboe <axboe@...nel.dk>
Cc:     linux-block@...r.kernel.org, Luis Chamberlain <mcgrof@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org, ming.lei@...hat.com
Subject: Re: [PATCH V3 0/4] zram: fix two races and one zram leak

Hello Andrew Morton and Jens,

On Mon, Oct 25, 2021 at 09:30:07AM -0700, Minchan Kim wrote:
> On Mon, Oct 25, 2021 at 10:54:22AM +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)
> > 
> > V3:
> > 	- no code change
> > 	- update commit log or comment as Luis suggested
> > 	- add reviewed-by tag
> > 
> > V2:
> > 	- take another approach to avoid failing of zram_remove()
> > 	- add patch to address race between zram_reset_device() and
> > 	  disksize_store()
> > 
> > 
> > Ming Lei (4):
> >   zram: fix race between zram_reset_device() and disksize_store()
> >   zram: don't fail to remove zram during unloading module
> >   zram: avoid race between zram_remove and disksize_store
> >   zram: replace fsync_bdev with sync_blockdev
> 
> Andrew Morton usually takes zram patches so Ccing him.
> 
> Acked-by: Minchan Kim <minchan@...nel.org>
> 
> for all patches in this thread.
 
Any chance to make it in v5.16?

Thanks,
Ming