Branch b_hd_dmu

[fs/lustre-release.git] / lustre / ldlm / ldlm_internal.h

diff --git a/lustre/ldlm/ldlm_internal.h b/lustre/ldlm/ldlm_internal.h
index 25ac511..4cf0798 100644 (file)
--- a/lustre/ldlm/ldlm_internal.h
+++ b/lustre/ldlm/ldlm_internal.h
@@ -36,17 +36,27 @@ typedef enum {
 } ldlm_sync_t;
 
 /* Cancel lru flag, it indicates we cancel aged locks. */
-#define LDLM_CANCEL_AGED 0x00000001
+enum {
+        LDLM_CANCEL_AGED   = 1 << 0, /* Cancel aged locks (non lru resize). */
+        LDLM_CANCEL_PASSED = 1 << 1, /* Cancel passed number of locks. */
+        LDLM_CANCEL_SHRINK = 1 << 2, /* Cancel locks from shrinker. */
+        LDLM_CANCEL_LRUR   = 1 << 3  /* Cancel locks from lru resize. */
+};
 
-int ldlm_cancel_lru(struct ldlm_namespace *ns, int nr, ldlm_sync_t sync);
+int ldlm_cancel_lru(struct ldlm_namespace *ns, int nr, ldlm_sync_t sync, 
+                    int flags);
 int ldlm_cancel_lru_local(struct ldlm_namespace *ns, struct list_head *cancels,
-                          int count, int max, int flags);
+                          int count, int max, int cancel_flags, int flags);
+int ldlm_cancel_lru_estimate(struct ldlm_namespace *ns, int count, int max, 
+                             int flags);
 
 /* ldlm_resource.c */
 int ldlm_resource_putref_locked(struct ldlm_resource *res);
 void ldlm_resource_insert_lock_after(struct ldlm_lock *original,
                                      struct ldlm_lock *new);
-
+void ldlm_namespace_free_prior(struct ldlm_namespace *ns,
+                               struct obd_import *imp, int force);
+void ldlm_namespace_free_post(struct ldlm_namespace *ns);
 /* ldlm_lock.c */
 
 /* Number of blocking/completion callbacks that will be sent in
@@ -59,6 +69,12 @@ struct ldlm_cb_set_arg {
         __u32 type; /* LDLM_BL_CALLBACK or LDLM_CP_CALLBACK */
 };
 
+typedef enum {
+        LDLM_WORK_BL_AST,
+        LDLM_WORK_CP_AST,
+        LDLM_WORK_REVOKE_AST
+} ldlm_desc_ast_t; 
+
 void ldlm_grant_lock(struct ldlm_lock *lock, struct list_head *work_list);
 struct ldlm_lock *
 ldlm_lock_create(struct ldlm_namespace *ns, const struct ldlm_res_id *,
@@ -73,8 +89,7 @@ void ldlm_add_ast_work_item(struct ldlm_lock *lock, struct ldlm_lock *new,
                                 struct list_head *work_list);
 int ldlm_reprocess_queue(struct ldlm_resource *res, struct list_head *queue,
                          struct list_head *work_list);
-int ldlm_run_bl_ast_work(struct list_head *rpc_list);
-int ldlm_run_cp_ast_work(struct list_head *rpc_list);
+int ldlm_run_ast_work(struct list_head *rpc_list, ldlm_desc_ast_t ast_type);
 int ldlm_lock_remove_from_lru(struct ldlm_lock *lock);
 int ldlm_lock_remove_from_lru_nolock(struct ldlm_lock *lock);
 void ldlm_lock_add_to_lru_nolock(struct ldlm_lock *lock);
@@ -98,6 +113,8 @@ int ldlm_process_plain_lock(struct ldlm_lock *lock, int *flags, int first_enq,
 /* ldlm_extent.c */
 int ldlm_process_extent_lock(struct ldlm_lock *lock, int *flags, int first_enq,
                              ldlm_error_t *err, struct list_head *work_list);
+void ldlm_extent_add_lock(struct ldlm_resource *res, struct ldlm_lock *lock);
+void ldlm_extent_unlink_lock(struct ldlm_lock *lock);
 
 /* ldlm_flock.c */
 int ldlm_process_flock_lock(struct ldlm_lock *req, int *flags, int first_enq,
@@ -123,6 +140,66 @@ struct ldlm_state {
         struct ldlm_bl_pool *ldlm_bl_pool;
 };
 
+/* interval tree, for LDLM_EXTENT. */
+extern cfs_mem_cache_t *ldlm_interval_slab; /* slab cache for ldlm_interval */
+extern void ldlm_interval_attach(struct ldlm_interval *n, struct ldlm_lock *l);
+extern struct ldlm_interval *ldlm_interval_detach(struct ldlm_lock *l);
+extern struct ldlm_interval *ldlm_interval_alloc(struct ldlm_lock *lock);
+extern void ldlm_interval_free(struct ldlm_interval *node);
+/* this function must be called with res lock held */
+static inline struct ldlm_extent *
+ldlm_interval_extent(struct ldlm_interval *node)
+{
+        struct ldlm_lock *lock;
+        LASSERT(!list_empty(&node->li_group));
+
+        lock = list_entry(node->li_group.next, struct ldlm_lock, l_sl_policy);
+        return &lock->l_policy_data.l_extent;
+}
+
 int ldlm_init(void);
 void ldlm_exit(void);
 
+enum ldlm_policy_res {
+        LDLM_POLICY_CANCEL_LOCK,
+        LDLM_POLICY_KEEP_LOCK
+};
+
+typedef enum ldlm_policy_res ldlm_policy_res_t;
+
+#define LDLM_POOL_PROC_READER(var, type)                                    \
+        static int lprocfs_rd_##var(char *page, char **start, off_t off,    \
+                                    int count, int *eof, void *data)        \
+        {                                                                   \
+                struct ldlm_pool *pl = data;                                \
+                type tmp;                                                   \
+                                                                            \
+                spin_lock(&pl->pl_lock);                                    \
+                tmp = pl->pl_##var;                                         \
+                spin_unlock(&pl->pl_lock);                                  \
+                                                                            \
+                return lprocfs_rd_uint(page, start, off, count, eof, &tmp); \
+        }                                                                   \
+        struct __##var##__dummy_read {;} /* semicolon catcher */
+
+#define LDLM_POOL_PROC_WRITER(var, type)                                    \
+        int lprocfs_wr_##var(struct file *file, const char *buffer,         \
+                             unsigned long count, void *data)               \
+        {                                                                   \
+                struct ldlm_pool *pl = data;                                \
+                type tmp;                                                   \
+                int rc;                                                     \
+                                                                            \
+                rc = lprocfs_wr_uint(file, buffer, count, &tmp);            \
+                if (rc) {                                                   \
+                        CERROR("Can't parse user input, rc = %d\n", rc);    \
+                        return rc;                                          \
+                }                                                           \
+                                                                            \
+                spin_lock(&pl->pl_lock);                                    \
+                pl->pl_##var = tmp;                                         \
+                spin_unlock(&pl->pl_lock);                                  \
+                                                                            \
+                return rc;                                                  \
+        }                                                                   \
+        struct __##var##__dummy_write {;} /* semicolon catcher */