b=18233 fix read+truncate livelock

[fs/lustre-release.git] / lustre / mdd / mdd_internal.h

diff --git a/lustre/mdd/mdd_internal.h b/lustre/mdd/mdd_internal.h
index b523bae..a4210ab 100644 (file)
--- a/lustre/mdd/mdd_internal.h
+++ b/lustre/mdd/mdd_internal.h
@@ -26,7 +26,7 @@
  * GPL HEADER END
  */
 /*
- * Copyright  2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  */
 /*
@@ -67,6 +67,10 @@ static inline void mdd_quota_wrapper(struct lu_attr *la, unsigned int *qids)
 }
 #endif
 
+/* PDO lock is unnecessary for current MDT stack because operations
+ * are already protected by ldlm lock */
+#define MDD_DISABLE_PDO_LOCK    1
+
 enum mdd_txn_op {
         MDD_TXN_OBJECT_DESTROY_OP = 0,
         MDD_TXN_OBJECT_CREATE_OP,
@@ -103,7 +107,6 @@ struct mdd_txn_op_descr {
 
 struct mdd_changelog {
         cfs_spinlock_t                   mc_lock;    /* for index */
-        cfs_waitq_t                      mc_waitq;
         int                              mc_flags;
         int                              mc_mask;
         __u64                            mc_index;
@@ -227,6 +230,11 @@ void mdd_lov_objid_update(struct mdd_device *mdd, struct lov_mds_md *lmm);
 void mdd_lov_create_finish(const struct lu_env *env, struct mdd_device *mdd,
                            struct lov_mds_md *lmm, int lmm_size,
                            const struct md_op_spec *spec);
+int mdd_file_lock(const struct lu_env *env, struct md_object *obj,
+                  struct lov_mds_md *lmm, struct ldlm_extent *extent,
+                  struct lustre_handle *lockh);
+int mdd_file_unlock(const struct lu_env *env, struct md_object *obj,
+                    struct lov_mds_md *lmm, struct lustre_handle *lockh);
 int mdd_get_md(const struct lu_env *env, struct mdd_object *obj,
                void *md, int *md_size, const char *name);
 int mdd_get_md_locked(const struct lu_env *env, struct mdd_object *obj,
@@ -248,6 +256,8 @@ int mdd_object_kill(const struct lu_env *env, struct mdd_object *obj,
                     struct md_attr *ma);
 int mdd_iattr_get(const struct lu_env *env, struct mdd_object *mdd_obj,
                   struct md_attr *ma);
+int mdd_attr_get_internal(const struct lu_env *env, struct mdd_object *mdd_obj,
+                          struct md_attr *ma);
 int mdd_attr_get_internal_locked(const struct lu_env *env,
                                  struct mdd_object *mdd_obj,
                                  struct md_attr *ma);
@@ -374,11 +384,11 @@ extern const struct lu_device_operations mdd_lu_ops;
 struct mdd_object *mdd_object_find(const struct lu_env *env,
                                    struct mdd_device *d,
                                    const struct lu_fid *f);
-int mdd_get_default_md(struct mdd_object *mdd_obj, struct lov_mds_md *lmm,
-                       int *size);
+int mdd_get_default_md(struct mdd_object *mdd_obj, struct lov_mds_md *lmm);
 int mdd_readpage(const struct lu_env *env, struct md_object *obj,
                  const struct lu_rdpg *rdpg);
-
+int mdd_changelog(const struct lu_env *env, enum changelog_rec_type type,
+                  int flags, struct md_object *obj);
 /* mdd_quota.c*/
 #ifdef HAVE_QUOTA_SUPPORT
 int mdd_quota_notify(const struct lu_env *env, struct md_device *m);