[PATCH 02/18] fs_context: fix shrinker leak in sget_fc()

[Eric Biggers]

From: Eric Biggers <ebigg...@google.com>

alloc_super() now preallocates the shrinker, so sget_fc() must only
register the pre-allocated shrinker, not allocate one again.

Fixes: 8a2e54b8af88 ("vfs: Implement a filesystem superblock 
creation/configuration context")
Signed-off-by: Eric Biggers <ebigg...@google.com>
---
 fs/super.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/super.c b/fs/super.c
index e6052a72f3558..a992dd0f27670 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -559,7 +559,7 @@ struct super_block *sget_fc(struct fs_context *fc,
        hlist_add_head(&s->s_instances, &s->s_type->fs_supers);
        spin_unlock(&sb_lock);
        get_filesystem(s->s_type);
-       register_shrinker(&s->s_shrink);
+       register_shrinker_prepared(&s->s_shrink);
        return s;
 }
 EXPORT_SYMBOL(sget_fc);
-- 
2.18.0