allow attaching fs_pin to a group not associated with some superblock

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 2 insertions, 2 deletions

diff --git a/fs/super.c b/fs/super.c
index eae088f..2d82245 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -706,9 +706,9 @@ int do_remount_sb(struct super_block *sb, int flags, void *data, int force)
 	remount_ro = (flags & MS_RDONLY) && !(sb->s_flags & MS_RDONLY);
 
 	if (remount_ro) {
-		if (sb->s_pins.first) {
+		if (!hlist_empty(&sb->s_pins)) {
 			up_write(&sb->s_umount);
-			sb_pin_kill(sb);
+			group_pin_kill(&sb->s_pins);
 			down_write(&sb->s_umount);
 			if (!sb->s_root)
 				return 0;