b=24037 Changes of 2.6.32 kernel.

[fs/lustre-release.git] / lustre / mgs / mgs_fs.c

diff --git a/lustre/mgs/mgs_fs.c b/lustre/mgs/mgs_fs.c
index c81e0ea..b4036b9 100644 (file)
--- a/lustre/mgs/mgs_fs.c
+++ b/lustre/mgs/mgs_fs.c
@@ -16,8 +16,8 @@
  * in the LICENSE file that accompanied this code).
  *
  * You should have received a copy of the GNU General Public License
- * version 2 along with this program; If not, see [sun.com URL with a
- * copy of GPLv2].
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  *
  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  * CA 95054 USA or visit www.sun.com if you need additional information or
@@ -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.
  */
 /*
@@ -58,6 +58,65 @@
 #include <libcfs/list.h>
 #include "mgs_internal.h"
 
+int mgs_export_stats_init(struct obd_device *obd, struct obd_export *exp,
+                          int reconnect, void *localdata)
+
+{
+        lnet_nid_t *client_nid = localdata;
+        int rc, newnid;
+        ENTRY;
+
+        rc = lprocfs_exp_setup(exp, client_nid, reconnect, &newnid);
+        if (rc) {
+                /* Mask error for already created
+                 * /proc entries */
+                if (rc == -EALREADY)
+                        rc = 0;
+                RETURN(rc);
+        }
+        if (newnid) {
+                struct nid_stat *tmp = exp->exp_nid_stats;
+                int num_stats = 0;
+
+                num_stats = (sizeof(*obd->obd_type->typ_dt_ops) / sizeof(void *)) +
+                            LPROC_MGS_LAST - 1;
+                tmp->nid_stats = lprocfs_alloc_stats(num_stats,
+                                                     LPROCFS_STATS_FLAG_NOPERCPU);
+                if (tmp->nid_stats == NULL)
+                        return -ENOMEM;
+                lprocfs_init_ops_stats(LPROC_MGS_LAST, tmp->nid_stats);
+                mgs_stats_counter_init(tmp->nid_stats);
+                rc = lprocfs_register_stats(tmp->nid_proc, "stats",
+                                            tmp->nid_stats);
+                if (rc)
+                        GOTO(clean, rc);
+
+                rc = lprocfs_nid_ldlm_stats_init(tmp);
+                if (rc)
+                        GOTO(clean, rc);
+        }
+        RETURN(0);
+clean:
+        return rc;
+}
+
+/**
+ * Add client export data to the MGS.  This data is currently NOT stored on
+ * disk in the last_rcvd file or anywhere else.  In the event of a MGS
+ * crash all connections are treated as new connections.
+ */
+int mgs_client_add(struct obd_device *obd, struct obd_export *exp,
+                   void *localdata)
+{
+        return 0;
+}
+
+/* Remove client export data from the MGS */
+int mgs_client_free(struct obd_export *exp)
+{
+        return 0;
+}
+
 /* Same as mds_fid2dentry */
 /* Look up an entry by inode number. */
 /* this function ONLY returns valid dget'd dentries with an initialized inode
@@ -75,9 +134,9 @@ static struct dentry *mgs_fid2dentry(struct mgs_obd *mgs,
 
         if (ino == 0)
                 RETURN(ERR_PTR(-ESTALE));
-        
+
         snprintf(fid_name, sizeof(fid_name), "0x%lx", (unsigned long)ino);
-        
+
         /* under ext3 this is neither supposed to return bad inodes nor NULL
            inodes. */
         result = ll_lookup_one_len(fid_name, mgs->mgs_fid_de, strlen(fid_name));
@@ -102,7 +161,8 @@ static struct dentry *mgs_fid2dentry(struct mgs_obd *mgs,
                 /* we didn't find the right inode.. */
                 CDEBUG(D_INODE, "found wrong generation: inode %lu, link: %lu, "
                        "count: %d, generation %u/%u\n", inode->i_ino,
-                       (unsigned long)inode->i_nlink, atomic_read(&inode->i_count),
+                       (unsigned long)inode->i_nlink,
+                       atomic_read(&inode->i_count),
                        inode->i_generation, gen);
                 l_dput(result);
                 RETURN(ERR_PTR(-ENOENT));
@@ -131,7 +191,7 @@ int mgs_fs_setup(struct obd_device *obd, struct vfsmount *mnt)
         ENTRY;
 
         /* FIXME what's this?  Do I need it? */
-        rc = cleanup_group_info();
+        rc = cfs_cleanup_group_info();
         if (rc)
                 RETURN(rc);
 
@@ -149,10 +209,10 @@ int mgs_fs_setup(struct obd_device *obd, struct vfsmount *mnt)
         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 
         /* Setup the configs dir */
-        dentry = simple_mkdir(current->fs->pwd, mnt, MOUNT_CONFIGS_DIR, 0777, 1);
+        dentry = simple_mkdir(cfs_fs_pwd(current->fs), mnt, MOUNT_CONFIGS_DIR, 0777, 1);
         if (IS_ERR(dentry)) {
                 rc = PTR_ERR(dentry);
-                CERROR("cannot create %s directory: rc = %d\n", 
+                CERROR("cannot create %s directory: rc = %d\n",
                        MOUNT_CONFIGS_DIR, rc);
                 GOTO(err_pop, rc);
         }
@@ -160,7 +220,7 @@ int mgs_fs_setup(struct obd_device *obd, struct vfsmount *mnt)
 
         /* Need the iopen dir for fid2dentry, required by
            LLOG_ORIGIN_HANDLE_READ_HEADER */
-        dentry = lookup_one_len("__iopen__", current->fs->pwd,
+        dentry = ll_lookup_one_len("__iopen__", cfs_fs_pwd(current->fs),
                                 strlen("__iopen__"));
         if (IS_ERR(dentry)) {
                 rc = PTR_ERR(dentry);
@@ -195,16 +255,12 @@ int mgs_fs_cleanup(struct obd_device *obd)
         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 
         if (mgs->mgs_configs_dir) {
-                /*CERROR("configs dir dcount=%d\n",
-                       atomic_read(&mgs->mgs_configs_dir->d_count));*/
                 l_dput(mgs->mgs_configs_dir);
                 mgs->mgs_configs_dir = NULL;
         }
 
-        shrink_dcache_parent(mgs->mgs_fid_de);
-        /*CERROR("fid dir dcount=%d\n",
-               atomic_read(&mgs->mgs_fid_de->d_count));*/
         dput(mgs->mgs_fid_de);
+        shrink_dcache_sb(mgs->mgs_sb);
 
         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);