staging: lustre: llite: Delaying creation of client side proc entries.

In client_common_fill_super() proc entries are created before
before cl_sb_init() and therefore lu_site is not allocated resulting
in client crash when tried reading lu_site stats.
Delaying creation of proc entries after creation of all required data
structures fixed the problem.

Signed-off-by: Gaurav Mahajan <gmahajan@ddn.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-2941
Reviewed-on: http://review.whamcloud.com/6852
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Emoly Liu <emoly.liu@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/lustre/lustre/llite/llite_lib.c b/drivers/staging/lustre/lustre/llite/llite_lib.c
index c04d3776a952557f8dc0daa4075c2c5d81b388c1..b0948a7b860bb1557da112e4c44ae511aad75579 100644 (file)
--- a/drivers/staging/lustre/lustre/llite/llite_lib.c
+++ b/drivers/staging/lustre/lustre/llite/llite_lib.c
@@ -166,12 +166,6 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
                return -ENOMEM;
        }
 
-       if (llite_root) {
-               err = ldebugfs_register_mountpoint(llite_root, sb, dt, md);
-               if (err < 0)
-                       CERROR("could not register mount in <debugfs>/lustre/llite\n");
-       }
-
        /* indicate the features supported by this client */
        data->ocd_connect_flags = OBD_CONNECT_IBITS    | OBD_CONNECT_NODEVOH  |
                                  OBD_CONNECT_ATTRFID  |
@@ -552,6 +546,15 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
        kfree(data);
        kfree(osfs);
 
+       if (llite_root) {
+               err = ldebugfs_register_mountpoint(llite_root, sb, dt, md);
+               if (err < 0) {
+                       CERROR("%s: could not register mount in debugfs: "
+                              "rc = %d\n", ll_get_fsname(sb, NULL, 0), err);
+                       err = 0;
+               }
+       }
+
        return err;
 out_root:
        iput(root);
@@ -570,7 +573,6 @@ out_md:
 out:
        kfree(data);
        kfree(osfs);
-       ldebugfs_unregister_mountpoint(sbi);
        return err;
 }