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-rw-r--r--fs/ceph/ioctl.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/ceph/ioctl.h b/fs/ceph/ioctl.h
index be4a60487333..c77028afb1e1 100644
--- a/fs/ceph/ioctl.h
+++ b/fs/ceph/ioctl.h
@@ -34,6 +34,8 @@
struct ceph_ioctl_layout {
__u64 stripe_unit, stripe_count, object_size;
__u64 data_pool;
+
+ /* obsolete. new values ignored, always return -1 */
__s64 preferred_osd;
};