On 2019/8/12 12:09 上午, Greg KH wrote: > On Sun, Aug 11, 2019 at 11:41:57PM +0800, Coly Li wrote: >> On 2019/8/11 11:01 下午, gregkh@xxxxxxxxxxxxxxxxxxx wrote: >>> >>> The patch below does not apply to the 5.2-stable tree. >>> If someone wants it applied there, or to any other stable or longterm >>> tree, then please email the backport, including the original git commit >>> id to <stable@xxxxxxxxxxxxxxx>. >>> >>> thanks, >>> >>> greg k-h >> >> Hi Greg, >> >> I will post a rebased patch for the 5.2-stable tree. > > Is it really needed? > > I ask because in the patch it says: > >>> This bug was introduced in Linux v5.2, so this fix only applies to >>> Linux v5.2 is enough for stable tree maintainer. >>> >>> Fixes: 89e0341af082 ("bcache: use sysfs_match_string() instead of __sysfs_match_string()") Hi Greg, > > But commit 89e0341af082 showed up in 5.3-rc1, not 5.2. > > So why is this needed in 5.2.y? Indeed I was not sure which version this patch was merged, so I ran, > git describe 89e0341af082 v5.2-rc4-245-g89e0341af082 It seems I use git in an incorrect way. After check man git-describe I see '--contains' should be added (to find a tag which after/contains the commit), > git describe --contains 89e0341af082 v5.3-rc1~164^2~57 Yes, the fixing bug is from v5.3-rc1. Please ignore the noise.... Thanks. -- Coly Li