ubifs: register backing_dev_info

[safe/jmp/linux-2.6] / fs / super.c

diff --git a/fs/super.c b/fs/super.c
index bdd7158..83b4741 100644 (file)
--- a/fs/super.c
+++ b/fs/super.c
@@ -420,10 +420,8 @@ restart:
                        spin_unlock(&sb_lock);
 
                        down_read(&sb->s_umount);
-                       lock_super(sb);
                        if (sb->s_root && sb->s_dirt)
                                sb->s_op->write_super(sb);
-                       unlock_super(sb);
                        up_read(&sb->s_umount);
 
                        spin_lock(&sb_lock);
@@ -547,20 +545,24 @@ int do_remount_sb(struct super_block *sb, int flags, void *data, int force)
        if ((flags & MS_RDONLY) && !(sb->s_flags & MS_RDONLY)) {
                if (force)
                        mark_files_ro(sb);
-               else if (!fs_may_remount_ro(sb))
+               else if (!fs_may_remount_ro(sb)) {
+                       unlock_kernel();
                        return -EBUSY;
+               }
                retval = vfs_dq_off(sb, 1);
-               if (retval < 0 && retval != -ENOSYS)
+               if (retval < 0 && retval != -ENOSYS) {
+                       unlock_kernel();
                        return -EBUSY;
+               }
        }
        remount_rw = !(flags & MS_RDONLY) && (sb->s_flags & MS_RDONLY);
 
        if (sb->s_op->remount_fs) {
-               lock_super(sb);
                retval = sb->s_op->remount_fs(sb, &flags, data);
-               unlock_super(sb);
-               if (retval)
+               if (retval) {
+                       unlock_kernel();
                        return retval;
+               }
        }
        sb->s_flags = (sb->s_flags & ~MS_RMT_MASK) | (flags & MS_RMT_MASK);
        if (remount_rw)
@@ -583,9 +585,7 @@ static void do_emergency_remount(struct work_struct *work)
                         *
                         * What lock protects sb->s_flags??
                         */
-                       lock_kernel();
                        do_remount_sb(sb, MS_RDONLY, NULL, 1);
-                       unlock_kernel();
                }
                up_write(&sb->s_umount);
                put_super(sb);