[lkml]   [2018]   [Nov]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH] zram: close udev startup race condition as default groups
On Wed, Nov 14, 2018 at 02:52:23PM +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 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()
>[4] 33863c21e69e9, Staging: zram: Replace ioctls with sysfs interface
>Cc: Sergey Senozhatsky <>
>Cc: Hannes Reinecke <>
>Tested-by: Howard Chen <>
>Signed-off-by: Minchan Kim <>

I've queued this for 4.19 and 4.18, but it doesn't apply to anything
older than that.


 \ /
  Last update: 2018-11-15 18:45    [W:0.084 / U:13.312 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site