LU-163 Input valid 'mnt' parameter for 'dentry_open()'

[fs/lustre-release.git] / lustre / obdclass / obd_mount.c

diff --git a/lustre/obdclass/obd_mount.c b/lustre/obdclass/obd_mount.c
index 852eaa5..e92d1c2 100644 (file)
--- a/lustre/obdclass/obd_mount.c
+++ b/lustre/obdclass/obd_mount.c
@@ -56,7 +56,8 @@
 #include <lustre_disk.h>
 #include <lustre_param.h>
 
-static int (*client_fill_super)(struct super_block *sb) = NULL;
+static int (*client_fill_super)(struct super_block *sb,
+                                struct vfsmount *mnt) = NULL;
 static void (*kill_super_cb)(struct super_block *sb) = NULL;
 
 /*********** mount lookup *********/
@@ -1438,8 +1439,7 @@ static void server_wait_finished(struct vfsmount *mnt)
                cfs_block_sigs(blocked);
                if (rc < 0) {
                        LCONSOLE_EMERG("Danger: interrupted umount %s with "
-                                      "%d refs!\n",
-                                     mnt->mnt_devname,
+                                      "%d refs!\n", mnt->mnt_devname,
                                       atomic_read(&mnt->mnt_count));
                        break;
                }
@@ -2076,6 +2076,10 @@ invalid:
         RETURN(-EINVAL);
 }
 
+struct lustre_mount_data2 {
+        void *lmd2_data;
+        struct vfsmount *lmd2_mnt;
+};
 
 /** This is the entry point for the mount call into Lustre.
  * This is called when a server or client is mounted,
@@ -2085,6 +2089,7 @@ invalid:
 int lustre_fill_super(struct super_block *sb, void *data, int silent)
 {
         struct lustre_mount_data *lmd;
+        struct lustre_mount_data2 *lmd2 = data;
         struct lustre_sb_info *lsi;
         int rc;
         ENTRY;
@@ -2103,7 +2108,7 @@ int lustre_fill_super(struct super_block *sb, void *data, int silent)
         cfs_lockdep_off();
 
         /* Figure out the lmd from the mount options */
-        if (lmd_parse((char *)data, lmd)) {
+        if (lmd_parse((char *)(lmd2->lmd2_data), lmd)) {
                 lustre_put_lsi(sb);
                 GOTO(out, rc = -EINVAL);
         }
@@ -2124,7 +2129,7 @@ int lustre_fill_super(struct super_block *sb, void *data, int silent)
                         }
                         /* Connect and start */
                         /* (should always be ll_fill_super) */
-                        rc = (*client_fill_super)(sb);
+                        rc = (*client_fill_super)(sb, lmd2->lmd2_mnt);
                         /* c_f_s will call lustre_common_put_super on failure */
                 }
         } else {
@@ -2155,7 +2160,8 @@ out:
 
 /* We can't call ll_fill_super by name because it lives in a module that
    must be loaded after this one. */
-void lustre_register_client_fill_super(int (*cfs)(struct super_block *sb))
+void lustre_register_client_fill_super(int (*cfs)(struct super_block *sb,
+                                                  struct vfsmount *mnt))
 {
         client_fill_super = cfs;
 }
@@ -2168,17 +2174,18 @@ void lustre_register_kill_super_cb(void (*cfs)(struct super_block *sb))
 /***************** FS registration ******************/
 
 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18))
-struct super_block * lustre_get_sb(struct file_system_type *fs_type,
-                               int flags, const char *devname, void * data)
+struct super_block * lustre_get_sb(struct file_system_type *fs_type, int flags,
+                                   const char *devname, void * data)
 {
         return get_sb_nodev(fs_type, flags, data, lustre_fill_super);
 }
 #else
-int lustre_get_sb(struct file_system_type *fs_type,
-                               int flags, const char *devname, void * data,
-                               struct vfsmount *mnt)
+int lustre_get_sb(struct file_system_type *fs_type, int flags,
+                  const char *devname, void * data, struct vfsmount *mnt)
 {
-        return get_sb_nodev(fs_type, flags, data, lustre_fill_super, mnt);
+        struct lustre_mount_data2 lmd2 = {data, mnt};
+
+        return get_sb_nodev(fs_type, flags, &lmd2, lustre_fill_super, mnt);
 }
 #endif