linux-kernel - [PATCH 6.0 213/862] erofs: use kill_anon_super() to kill super in fscache mode

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Date:   Wed, 19 Oct 2022 10:25:00 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jingbo Xu <jefflexu@...ux.alibaba.com>,
        Jia Zhu <zhujia.zj@...edance.com>,
        Gao Xiang <hsiangkao@...ux.alibaba.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 6.0 213/862] erofs: use kill_anon_super() to kill super in fscache mode

From: Jia Zhu <zhujia.zj@...edance.com>

[ Upstream commit 1015c1016c231b26d4e2c9b3da65b6c043eb97a3 ]

Use kill_anon_super() instead of generic_shutdown_super() since the
mount() in erofs fscache mode uses get_tree_nodev() and associated
anon bdev needs to be freed.

Fixes: 9c0cc9c729657 ("erofs: add 'fsid' mount option")
Suggested-by: Jingbo Xu <jefflexu@...ux.alibaba.com>
Signed-off-by: Jia Zhu <zhujia.zj@...edance.com>
Reviewed-by: Jingbo Xu <jefflexu@...ux.alibaba.com>
Link: https://lore.kernel.org/r/20220918043456.147-2-zhujia.zj@bytedance.com
Signed-off-by: Gao Xiang <hsiangkao@...ux.alibaba.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 fs/erofs/super.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/erofs/super.c b/fs/erofs/super.c
index 3173debeaa5a..9716d355a63e 100644
--- a/fs/erofs/super.c
+++ b/fs/erofs/super.c
@@ -879,7 +879,7 @@ static void erofs_kill_sb(struct super_block *sb)
 	WARN_ON(sb->s_magic != EROFS_SUPER_MAGIC);
 
 	if (erofs_is_fscache_mode(sb))
-		generic_shutdown_super(sb);
+		kill_anon_super(sb);
 	else
 		kill_block_super(sb);
 
-- 
2.35.1