OpenAFS Master Repository branch, master, updated. openafs-devel-1_9_1-403-gd9a9245

[Gerrit Code Review]

The following commit has been merged in the master branch:
commit d9a9245f51b6ffaafa6021e4abe64bbfec0ee17b
Author: Andrew Deason <adeason@sinenomine.net>
Date:   Wed Dec 29 15:29:14 2021 -0600

    LINUX: Test for rcu_read_unlock with rcu_read_lock
    
    If we're going to call rcu_read_lock(), we're also going to need to
    call rcu_read_unlock(). Make sure both functions are available before
    saying that rcu_read_lock is available.
    
    Without this, trying to use rcu_read_lock/unlock can result in errors
    during the kernel build for kernels where rcu_read_unlock calls
    rcu_read_unlock_strict (a GPLONLY function). This started in Linux
    commit aa40c138cc8f (rcu: Report QS for outermost PREEMPT=n
    rcu_read_unlock() for strict GPs), which was included in Linux 5.10.
    
    Change-Id: I1d2d5272c722d60ec55dcfd6c07b79e4edfc995b
    Reviewed-on: https://gerrit.openafs.org/14876
    Reviewed-by: Cheyenne Wills <cwills@sinenomine.net>
    Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
    Tested-by: BuildBot <buildbot@rampaginggeek.com>
    Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>

 src/cf/linux-kernel-func.m4 | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

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