APPLIED[A]: [SRU][Artful][PATCH 0/1] UBUNTU: SAUCE: (no-up) s390: fix rwlock implementation

[Stefan Bader]

On 07.05.2018 23:59, Joseph Salisbury wrote:
> BugLink: http://bugs.launchpad.net/bugs/1761674
> 
> == SRU Justification ==
> IBM reported this bug due to a regression introduced by mainline commit
> 94232a4332de.  IBM has requested this SAUCE backport to resolve this
> regression in Artful and Xenial.  
> 
> With Bionic and v4.15, the rwlock code has been rewritten. See upstream git 
> commit: 
> eb3b7b848fb3 ("s390/rwlock: introduce rwlock wait queueing").
> 
> Since the upstream code has been rewritten there also won't be an upstream 
> git commit id available which contains the attached fix.
> 
> Xenial also requires this fix, but it's backport is differant.  It will
> be sent in another SRU request.
> 
> == Fix ==
> UBUNTU: SAUCE: (no-up) s390: fix rwlock implementation
> 
> == Regression Potential ==
> Low.  The backport was written and tested by IBM. It is specific to s390.
> 
> == 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.
> 
> Heiko Carstens (1):
>   s390: fix rwlock implementation
> 
>  arch/s390/lib/spinlock.c | 46 +++++++++-------------------------------------
>  1 file changed, 9 insertions(+), 37 deletions(-)
> 
Applied to artful master-next.

-Stefan


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