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| author |   James Morris <james.l.morris@oracle.com> | 2014-11-19 21:32:12 +1100 |
|---|---|---|
| committer | James Morris <james.l.morris@oracle.com> | 2014-11-19 21:32:12 +1100 |
| commit | b10778a00d40b3d9fdaaf5891e802794781ff71c (patch) | |
| tree | 6ba4cbac86eecedc3f30650e7f764ecf00c83898 /arch/powerpc/lib/locks.c | |
| parent | integrity: do zero padding of the key id (diff) | |
| parent | Linux 3.17 (diff) | |
| download | wireguard-linux-b10778a00d40b3d9fdaaf5891e802794781ff71c.tar.xz wireguard-linux-b10778a00d40b3d9fdaaf5891e802794781ff71c.zip | |
Merge commit 'v3.17' into next
Diffstat (limited to '')
| -rw-r--r-- | arch/powerpc/lib/locks.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/lib/locks.c b/arch/powerpc/lib/locks.c index 0c9c8d7d0734..170a0346f756 100644 --- a/arch/powerpc/lib/locks.c +++ b/arch/powerpc/lib/locks.c @@ -70,12 +70,16 @@ void __rw_yield(arch_rwlock_t *rw) void arch_spin_unlock_wait(arch_spinlock_t *lock) { + smp_mb(); + while (lock->slock) { HMT_low(); if (SHARED_PROCESSOR) __spin_yield(lock); } HMT_medium(); + + smp_mb(); } EXPORT_SYMBOL(arch_spin_unlock_wait); |