btrfs: fix incorrect log message for nobarrier mount option

Fix a wrong log message that appears when the "nobarrier" mount option
is unset.  When "nobarrier" is unset, barrier is actually enabled.
However, the log incorrectly stated "turning off barriers".

Fixes: eddb1a4 ("btrfs: add reconfigure callback for fs_context")
CC: [email protected] # 6.12+
Reviewed-by: Qu Wenruo <[email protected]>
Signed-off-by: Kyoji Ogasawara <[email protected]>
Reviewed-by: David Sterba <[email protected]>
Signed-off-by: David Sterba <[email protected]>

Author: ksawaray

fs/btrfs/super.c

@@ -1462,7 +1462,7 @@ static void btrfs_emit_options(struct btrfs_fs_info *info,
 	btrfs_info_if_unset(info, old, NODATACOW, "setting datacow");
 	btrfs_info_if_unset(info, old, SSD, "not using ssd optimizations");
 	btrfs_info_if_unset(info, old, SSD_SPREAD, "not using spread ssd allocation scheme");
-	btrfs_info_if_unset(info, old, NOBARRIER, "turning off barriers");
+	btrfs_info_if_unset(info, old, NOBARRIER, "turning on barriers");
 	btrfs_info_if_unset(info, old, NOTREELOG, "enabling tree log");
 	btrfs_info_if_unset(info, old, SPACE_CACHE, "disabling disk space caching");
 	btrfs_info_if_unset(info, old, FREE_SPACE_TREE, "disabling free space tree");