staging/lustre/obdclass: runtime load lustre client when needed

Manually force loading of lustre.ko during client
mounts with request_module for cases where
autoloading doesn't happen.

Signed-off-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-on: http://review.whamcloud.com/10587
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4800
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Reviewed-by: Yang Sheng <yang.sheng@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/lustre/lustre/obdclass/obd_mount.c b/drivers/staging/lustre/lustre/obdclass/obd_mount.c
index 03d9a6ae2b0229c610f118d91df033e7586596a2..4e77f07de1d5d3752a1de6120864c0291ce2ee27 100644 (file)
--- a/drivers/staging/lustre/lustre/obdclass/obd_mount.c
+++ b/drivers/staging/lustre/lustre/obdclass/obd_mount.c
@@ -1216,7 +1216,9 @@ int lustre_fill_super(struct super_block *sb, void *data, int silent)
 
        if (lmd_is_client(lmd)) {
                CDEBUG(D_MOUNT, "Mounting client %s\n", lmd->lmd_profile);
-               if (!client_fill_super) {
+               if (client_fill_super == NULL)
+                       request_module("lustre");
+               if (client_fill_super == NULL) {
                        LCONSOLE_ERROR_MSG(0x165, "Nothing registered for "
                                           "client mount! Is the 'lustre' "
                                           "module loaded?\n");
@@ -1299,6 +1301,7 @@ struct file_system_type lustre_fs_type = {
        .fs_flags     = FS_BINARY_MOUNTDATA | FS_REQUIRES_DEV |
                        FS_HAS_FIEMAP | FS_RENAME_DOES_D_MOVE,
 };
+MODULE_ALIAS_FS("lustre");
 
 int lustre_register_fs(void)
 {