LU-2240 mds: Assign special fid sequence to root.

[fs/lustre-release.git] / lustre / include / lustre_fid.h

diff --git a/lustre/include/lustre_fid.h b/lustre/include/lustre_fid.h
index 539e829..0deb5db 100644 (file)
--- a/lustre/include/lustre_fid.h
+++ b/lustre/include/lustre_fid.h
@@ -249,10 +249,13 @@ static inline void lu_local_name_obj_fid(struct lu_fid *fid, __u32 oid)
         fid->f_ver = 0;
 }
 
         fid->f_ver = 0;
 }
 

+/* For new FS (>= 2.4), the root FID will be changed to
+ * [FID_SEQ_ROOT:1:0], for existing FS, (upgraded to 2.4),
+ * the root FID will still be IGIF */

 static inline int fid_is_root(const struct lu_fid *fid)
 {
 static inline int fid_is_root(const struct lu_fid *fid)
 {

-       return unlikely(fid_seq(fid) == FID_SEQ_LOCAL_FILE &&
-                       fid_oid(fid) == MDD_ROOT_INDEX_OID);
+       return unlikely((fid_seq(fid) == FID_SEQ_ROOT &&
+                        fid_oid(fid) == 1));

 }
 
 static inline int fid_is_dot_lustre(const struct lu_fid *fid)
 }
 
 static inline int fid_is_dot_lustre(const struct lu_fid *fid)


@@ -296,6 +299,12 @@ static inline int fid_is_client_visible(const struct lu_fid *fid)
        return fid_is_client_mdt_visible(fid) || fid_is_idif(fid);
 }
 
        return fid_is_client_mdt_visible(fid) || fid_is_idif(fid);
 }
 

+static inline int fid_seq_in_fldb(__u64 seq)
+{
+       return fid_seq_is_igif(seq) || fid_seq_is_norm(seq) ||
+              seq == FID_SEQ_ROOT;
+}
+

 static inline void lu_last_id_fid(struct lu_fid *fid, __u64 seq)
 {
        if (fid_seq_is_mdt0(seq)) {
 static inline void lu_last_id_fid(struct lu_fid *fid, __u64 seq)
 {
        if (fid_seq_is_mdt0(seq)) {