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-rw-r--r--fs/nilfs2/super.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index 922263393c76..0d573c2a6860 100644
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -1113,9 +1113,12 @@ nilfs_get_sb(struct file_system_type *fs_type, int flags,
if (!(flags & MS_RDONLY))
mode |= FMODE_WRITE;
+ lock_kernel();
sd.bdev = open_bdev_exclusive(dev_name, mode, fs_type);
- if (IS_ERR(sd.bdev))
+ if (IS_ERR(sd.bdev)) {
+ unlock_kernel();
return PTR_ERR(sd.bdev);
+ }
/*
* To get mount instance using sget() vfs-routine, NILFS needs
@@ -1198,6 +1201,7 @@ nilfs_get_sb(struct file_system_type *fs_type, int flags,
if (need_to_close)
close_bdev_exclusive(sd.bdev, mode);
simple_set_mnt(mnt, s);
+ unlock_kernel();
return 0;
failed_unlock:
@@ -1206,6 +1210,7 @@ nilfs_get_sb(struct file_system_type *fs_type, int flags,
failed:
close_bdev_exclusive(sd.bdev, mode);
+ unlock_kernel();
return err;
cancel_new:
@@ -1218,6 +1223,7 @@ nilfs_get_sb(struct file_system_type *fs_type, int flags,
* We must finish all post-cleaning before this call;
* put_nilfs() needs the block device.
*/
+ unlock_kernel();
return err;
}