LU-11912 ofd: reduce LUSTRE_DATA_SEQ_MAX_WIDTH

[fs/lustre-release.git] / lustre / ofd / ofd_internal.h

diff --git a/lustre/ofd/ofd_internal.h b/lustre/ofd/ofd_internal.h
index 7970ed4..951bc2e 100644 (file)
--- a/lustre/ofd/ofd_internal.h
+++ b/lustre/ofd/ofd_internal.h
@@ -523,4 +523,21 @@ static inline bool ofd_layout_version_less(__u32 req_version,
                ((req & LU_LAYOUT_HIGEN) == (ondisk & LU_LAYOUT_HIGEN));
 }
 
+static inline int ofd_seq_is_exhausted(struct ofd_device *ofd,
+                                      const struct obdo *oa)
+{
+       struct seq_server_site *ss = &ofd->ofd_seq_site;
+       __u64 seq_width = ss->ss_client_seq->lcs_width;
+       __u64 seq = ostid_seq(&oa->o_oi);
+       __u64 oid = ostid_id(&oa->o_oi);
+
+       if (fid_seq_is_norm(seq))
+               return oid >= min(seq_width, OBIF_MAX_OID);
+       if (fid_seq_is_idif(seq) || fid_seq_is_mdt0(seq))
+               return oid >= min(seq_width, IDIF_MAX_OID);
+       CERROR("%s : invalid o_seq "DOSTID"\n",
+              ofd_name(ofd), POSTID(&oa->o_oi));
+       return -EINVAL;
+}
+
 #endif /* _OFD_INTERNAL_H */