ACK: [SRU][Xenial][PATCH 0/1] block: fix module reference leak on put_disk() call for cgroups throttle

[Colin Ian King]

On 19/04/17 19:33, Joseph Salisbury wrote:
> BugLink: http://bugs.launchpad.net/bugs/1683976
> 
> == SRU Justification ==
> Due to this bug, the module reference count will leak whenever you write to 
> /sys/fs/cgroup/blkio/blkio.throttle.*  There is a script in the bug report
> to reproduce the bug.
> 
> Commit 39a169b62b41 resolves this bug and was added to mainline in
> v4.5-rc5.  However, it was not cc'd to stable.
> 
> This commit is also needed in Trusty, but needs a minor backport.  The Trusty
> SRU will be sent separately.
> 
> == Fix ==
> commit 39a169b62b415390398291080dafe63aec751e0a
> Author: Roman Pen <roman.penyaev at profitbricks.com>
> Date:   Tue Feb 9 12:33:35 2016 -0700
> 
>     block: fix module reference leak on put_disk() call for cgroups throttle
> 
> == Test Case ==
> A test kernel was built with this patch and tested by the original bug reporter.
> The bug reporter states the test kernel resolved the bug.
> 
> 
> Roman Pen (1):
>   block: fix module reference leak on put_disk() call for cgroups
>     throttle
> 
>  block/blk-cgroup.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
Sane looking upstream fix, backport looks good, good test case and good
test results for Xenial.

Thanks Joe.

Acked-by: Colin Ian King <colin.king at canonical.com>