[PATCH 02/10] locking/qspinlock: Remove unbounded cmpxchg loop from locking slowpath

[Sasha Levin]

Hi,

[This is an automated email]

This commit has been processed by the -stable helper bot and determined
to be a high probability candidate for -stable trees. (score: 32.4825)

The bot has tested the following trees: v4.16.1, v4.15.16, v4.14.33, v4.9.93, v4.4.127.

v4.16.1: Failed to apply! Possible dependencies:
    Unable to calculate

v4.15.16: Failed to apply! Possible dependencies:
    Unable to calculate

v4.14.33: Failed to apply! Possible dependencies:
    Unable to calculate

v4.9.93: Failed to apply! Possible dependencies:
    Unable to calculate

v4.4.127: Failed to apply! Possible dependencies:
    1c4941fd53af ("locking/pvqspinlock: Allow limited lock stealing")
    1f03e8d29192 ("locking/barriers: Replace smp_cond_acquire() with smp_cond_load_acquire()")
    64d816cba06c ("locking/qspinlock: Use _acquire/_release() versions of cmpxchg() & xchg()")


Please let us know if you'd like to have this patch included in a stable tree.

--
Thanks,
Sasha