This barrier only applies to the read-modify-write operations; in
particular, it does not apply to the atomic64_set() primitive.
Replace the barrier with an smp_mb().
Fixes: fdd4e15838e59 ("ceph: rework dcache readdir")
Cc: sta...@vger.kernel.org
Reported-by: "Paul E. McKenney" <paul...@linux.ibm.com>
Reported-by: Peter Zijlstra <pet...@infradead.org>
Signed-off-by: Andrea Parri <andrea.pa...@amarulasolutions.com>
Cc: "Yan, Zheng" <z...@redhat.com>
Cc: Sage Weil <s...@redhat.com>
Cc: Ilya Dryomov <idryo...@gmail.com>
Cc: ceph-de...@vger.kernel.org
---
fs/ceph/super.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index 16c03188578ea..b5c782e6d62f1 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -541,7 +541,7 @@ static inline void __ceph_dir_set_complete(struct
ceph_inode_info *ci,
long long release_count,
long long ordered_count)
{
- smp_mb__before_atomic();
+ smp_mb();
atomic64_set(&ci->i_complete_seq[0], release_count);
atomic64_set(&ci->i_complete_seq[1], ordered_count);
}
--
2.7.4
