diff options
Diffstat (limited to 'fs/nfs/pnfs_dev.c')
| -rw-r--r-- | fs/nfs/pnfs_dev.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/fs/nfs/pnfs_dev.c b/fs/nfs/pnfs_dev.c index 7fb59487ee90..537b80d693f1 100644 --- a/fs/nfs/pnfs_dev.c +++ b/fs/nfs/pnfs_dev.c @@ -284,10 +284,22 @@ nfs4_put_deviceid_node(struct nfs4_deviceid_node *d) EXPORT_SYMBOL_GPL(nfs4_put_deviceid_node); void +nfs4_mark_deviceid_available(struct nfs4_deviceid_node *node) +{ + if (test_bit(NFS_DEVICEID_UNAVAILABLE, &node->flags)) { + clear_bit(NFS_DEVICEID_UNAVAILABLE, &node->flags); + smp_mb__after_atomic(); + } +} +EXPORT_SYMBOL_GPL(nfs4_mark_deviceid_available); + +void nfs4_mark_deviceid_unavailable(struct nfs4_deviceid_node *node) { node->timestamp_unavailable = jiffies; + smp_mb__before_atomic(); set_bit(NFS_DEVICEID_UNAVAILABLE, &node->flags); + smp_mb__after_atomic(); } EXPORT_SYMBOL_GPL(nfs4_mark_deviceid_unavailable); @@ -302,6 +314,7 @@ nfs4_test_deviceid_unavailable(struct nfs4_deviceid_node *node) if (time_in_range(node->timestamp_unavailable, start, end)) return true; clear_bit(NFS_DEVICEID_UNAVAILABLE, &node->flags); + smp_mb__after_atomic(); } return false; } |