LU-1962 util: Add --lazy flag to lfs df

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

diff --git a/lustre/include/lustre_export.h b/lustre/include/lustre_export.h
index 2e0d95e..8dec5f2 100644 (file)
--- a/lustre/include/lustre_export.h
+++ b/lustre/include/lustre_export.h
@@ -1,6 +1,4 @@
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
  * GPL HEADER START
  *
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
@@ -28,6 +26,8 @@
 /*
  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2012, Whamcloud, Inc.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -60,7 +60,7 @@ struct mdt_idmap_table;
  */
 struct tg_export_data {
         /** Protects led_lcd below */
-        cfs_semaphore_t         ted_lcd_lock;
+        cfs_mutex_t             ted_lcd_lock;
         /** Per-client data for each export */
         struct lsd_client_data *ted_lcd;
         /** Offset of record in last_rcvd file */
@@ -79,7 +79,7 @@ struct mdt_export_data {
         cfs_spinlock_t          med_open_lock; /* lock med_open_head, mfd_list*/
         /** Bitmask of all ibit locks this MDT understands */
         __u64                   med_ibits_known;
-        cfs_semaphore_t         med_idmap_sem;
+        cfs_mutex_t             med_idmap_mutex;
         struct lustre_idmap_table *med_idmap;
 };
 
@@ -114,6 +114,7 @@ struct filter_export_data {
         int                        fed_mod_count;/* items in fed_writing list */
         long                       fed_pending;  /* bytes just being written */
         __u32                      fed_group;
+       __u8                       fed_pagesize; /* log2 of client page size */
 };
 
 struct mgs_export_data {
@@ -179,13 +180,13 @@ struct obd_export {
          */
         cfs_atomic_t              exp_rpc_count; /* RPC references */
         cfs_atomic_t              exp_cb_count; /* Commit callback references */
+       /** Number of queued replay requests to be processes */
+       cfs_atomic_t              exp_replay_count;
         cfs_atomic_t              exp_locks_count; /** Lock references */
 #if LUSTRE_TRACKS_LOCK_EXP_REFS
         cfs_list_t                exp_locks_list;
         cfs_spinlock_t            exp_locks_list_guard;
 #endif
-        /** Number of queued replay requests to be processes */
-        cfs_atomic_t              exp_replay_count;
         /** UUID of client connected to this export */
         struct obd_uuid           exp_client_uuid;
         /** To link all exports on an obd device */
@@ -201,7 +202,10 @@ struct obd_export {
         cfs_list_t                exp_obd_chain_timed;
         /** Obd device of this export */
         struct obd_device        *exp_obd;
-        /** "reverse" import to send requests (e.g. from ldlm) back to client */
+       /**
+        * "reverse" import to send requests (e.g. from ldlm) back to client
+        * exp_lock protect its change
+        */
         struct obd_import        *exp_imp_reverse;
         struct nid_stat          *exp_nid_stats;
         struct lprocfs_stats     *exp_md_stats;
@@ -211,8 +215,11 @@ struct obd_export {
         __u32                     exp_conn_cnt;
         /** Hash list of all ldlm locks granted on this export */
         cfs_hash_t               *exp_lock_hash;
-        /** lock to protect exp_lock_hash accesses */
-        cfs_spinlock_t            exp_lock_hash_lock;
+        /**
+        * Hash list for Posix lock deadlock detection, added with
+        * ldlm_lock::l_exp_flock_hash.
+         */
+       cfs_hash_t               *exp_flock_hash;
         cfs_list_t                exp_outstanding_replies;
         cfs_list_t                exp_uncommitted_replies;
         cfs_spinlock_t            exp_uncommitted_replies_lock;
@@ -222,10 +229,11 @@ struct obd_export {
         cfs_time_t                exp_last_request_time;
         /** On replay all requests waiting for replay are linked here */
         cfs_list_t                exp_req_replay_queue;
-        /** protects exp_flags and exp_outstanding_replies */
+       /**
+        * protects exp_flags, exp_outstanding_replies and the change
+        * of exp_imp_reverse
+        */
         cfs_spinlock_t            exp_lock;
-        /** protects exp_queued_rpc */
-        cfs_spinlock_t            exp_rpc_lock;
         /** Compatibility flags for this export */
         __u64                     exp_connect_flags;
         enum obd_option           exp_flags;
@@ -245,14 +253,24 @@ struct obd_export {
                                   exp_libclient:1, /* liblustre client? */
                                   /* client timed out and tried to reconnect,
                                    * but couldn't because of active rpcs */
-                                  exp_abort_active_req:1;
-        cfs_list_t                exp_queued_rpc;  /* RPC to be handled */
+                                 exp_abort_active_req:1,
+                                 /* if to swap nidtbl entries for 2.2 clients.
+                                  * Only used by the MGS to fix LU-1644. */
+                                 exp_need_mne_swab:1;
         /* also protected by exp_lock */
         enum lustre_sec_part      exp_sp_peer;
         struct sptlrpc_flavor     exp_flvr;             /* current */
         struct sptlrpc_flavor     exp_flvr_old[2];      /* about-to-expire */
         cfs_time_t                exp_flvr_expire[2];   /* seconds */
 
+        /** protects exp_hp_rpcs */
+        cfs_spinlock_t            exp_rpc_lock;
+        cfs_list_t                exp_hp_rpcs;  /* (potential) HP RPCs */
+
+        /** blocking dlm lock list, protected by exp_bl_list_lock */
+        cfs_list_t                exp_bl_list;
+        cfs_spinlock_t            exp_bl_list_lock;
+
         /** Target specific data */
         union {
                 struct tg_export_data     eu_target_data;