LU-4931 ladvise: Add feature of giving file access advices

[fs/lustre-release.git] / lustre / osd-zfs / osd_io.c

diff --git a/lustre/osd-zfs/osd_io.c b/lustre/osd-zfs/osd_io.c
index 8299128..a6b6cea 100644 (file)
--- a/lustre/osd-zfs/osd_io.c
+++ b/lustre/osd-zfs/osd_io.c
@@ -906,6 +906,20 @@ static int osd_declare_punch(const struct lu_env *env, struct dt_object *dt,
                                 false));
 }
 
+static int osd_ladvise(const struct lu_env *env, struct dt_object *dt,
+                      __u64 start, __u64 end, enum lu_ladvise_type advice)
+{
+       int     rc;
+       ENTRY;
+
+       switch (advice) {
+       default:
+               rc = -ENOTSUPP;
+               break;
+       }
+
+       RETURN(rc);
+}
 
 struct dt_body_operations osd_body_ops = {
        .dbo_read                       = osd_read,
@@ -919,4 +933,5 @@ struct dt_body_operations osd_body_ops = {
        .dbo_read_prep                  = osd_read_prep,
        .dbo_declare_punch              = osd_declare_punch,
        .dbo_punch                      = osd_punch,
+       .dbo_ladvise                    = osd_ladvise,
 };