LU-11670 osc: glimpse - search for active lock

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

diff --git a/lustre/include/lustre_dlm.h b/lustre/include/lustre_dlm.h
index cb265ae..6f6cf85 100644 (file)
--- a/lustre/include/lustre_dlm.h
+++ b/lustre/include/lustre_dlm.h
@@ -965,6 +965,20 @@ struct ldlm_lock {
        struct list_head        l_exp_list;
 };
 
+/**
+ * Describe the overlap between two locks.  itree_overlap_cb data.
+ */
+struct ldlm_match_data {
+       struct ldlm_lock        *lmd_old;
+       struct ldlm_lock        *lmd_lock;
+       enum ldlm_mode          *lmd_mode;
+       union ldlm_policy_data  *lmd_policy;
+       __u64                    lmd_flags;
+       __u64                    lmd_skip_flags;
+       int                      lmd_unref;
+       bool                     lmd_has_ast_data;
+};
+
 /** For uncommitted cross-MDT lock, store transno this lock belongs to */
 #define l_transno l_client_cookie
 
@@ -1543,7 +1557,8 @@ static inline enum ldlm_mode ldlm_lock_match(struct ldlm_namespace *ns,
        return ldlm_lock_match_with_skip(ns, flags, 0, res_id, type, policy,
                                         mode, lh, unref);
 }
-
+struct ldlm_lock *search_itree(struct ldlm_resource *res,
+                              struct ldlm_match_data *data);
 enum ldlm_mode ldlm_revalidate_lock_handle(const struct lustre_handle *lockh,
                                           __u64 *bits);
 void ldlm_lock_mode_downgrade(struct ldlm_lock *lock, enum ldlm_mode new_mode);