diff --git a/fs/super.c b/fs/super.c
index cfadab2cbf35..adc18652302b 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -80,6 +80,11 @@ static unsigned long super_cache_scan(struct shrinker *shrink,
 	if (!trylock_super(sb))
 		return SHRINK_STOP;
 
+	if (sb->s_writers.frozen != SB_UNFROZEN) {
+		up_read(&sb->s_umount);
+		return SHRINK_STOP;
+	}

Whatever happened to "let's just fsfreeze the filesystems shortly before
freezing the system?  Did someone find a reason why that wouldn't work?

Also, uh, doesn't this disable memory reclaim for frozen filesystems?

Maybe we all need to go review the xfs io-less inode reclaim series so
we can stop running transactions in reclaim... I can't merge any of it
until the mm changes go upstream.

IO-less reclaim doesn't prevent ->destroy_inode from having to run
transactions. e.g. this is the path through which unlink does inode
freeing. Background inode inactivation is the patchset that
addresses this problem... :)

Sound backgroup inode inactivation is only for xfs? I suppose this is a generic issue, other fs will also suffer this?

Thanks,

Junxiao.

Cheers,

Dave.