Fix the memory barriers in nfs4_mark_deviceid_unavailable() and
nfs4_test_deviceid_unavailable().
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
nfs4_mark_deviceid_unavailable(struct nfs4_deviceid_node *node)
{
node->timestamp_unavailable = jiffies;
nfs4_mark_deviceid_unavailable(struct nfs4_deviceid_node *node)
{
node->timestamp_unavailable = jiffies;
+ smp_mb__before_atomic();
set_bit(NFS_DEVICEID_UNAVAILABLE, &node->flags);
set_bit(NFS_DEVICEID_UNAVAILABLE, &node->flags);
+ smp_mb__after_atomic();
}
EXPORT_SYMBOL_GPL(nfs4_mark_deviceid_unavailable);
}
EXPORT_SYMBOL_GPL(nfs4_mark_deviceid_unavailable);
if (time_in_range(node->timestamp_unavailable, start, end))
return true;
clear_bit(NFS_DEVICEID_UNAVAILABLE, &node->flags);
if (time_in_range(node->timestamp_unavailable, start, end))
return true;
clear_bit(NFS_DEVICEID_UNAVAILABLE, &node->flags);
+ smp_mb__after_atomic();