Messages in this thread | | | Date | Fri, 23 Nov 2018 13:50:55 -0500 | From | Sasha Levin <> | Subject | Re: [PATCH for v4.14] zram: close udev startup race condition as default groups |
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On Fri, Nov 23, 2018 at 03:25:50PM +0900, Minchan Kim wrote: >commit fef912bf860e upstream. >commit 98af4d4df889 upstream. > >I got a report from Howard Chen that he saw zram and sysfs race(ie, >zram block device file is created but sysfs for it isn't yet) >when he tried to create new zram devices via hotadd knob. > >v4.20 kernel fixes it by [1, 2] but it's too large size to merge >into -stable so this patch fixes the problem by registering defualt >group by Greg KH's approach[3]. > >This patch should be applied to every stable tree [3.16+] currently >existing from kernel.org because the problem was introduced at 2.6.37 >by [4]. > >[1] fef912bf860e, block: genhd: add 'groups' argument to device_add_disk >[2] 98af4d4df889, zram: register default groups with device_add_disk() >[3] http://kroah.com/log/blog/2013/06/26/how-to-create-a-sysfs-file-correctly/ >[4] 33863c21e69e9, Staging: zram: Replace ioctls with sysfs interface > >Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> >Cc: Hannes Reinecke <hare@suse.com> >Tested-by: Howard Chen <howardsoc@google.com> >Signed-off-by: Minchan Kim <minchan@kernel.org>
I've queued all 4 to their respective branches, thank you.
-- Thanks, Sasha
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