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Message-ID: <20180203180015.29073-21-alexander.levin@microsoft.com>
Date: Sat, 3 Feb 2018 18:00:37 +0000
From: Sasha Levin <Alexander.Levin@...rosoft.com>
To: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"stable@...r.kernel.org" <stable@...r.kernel.org>
CC: Al Viro <viro@...iv.linux.org.uk>,
Sasha Levin <Alexander.Levin@...rosoft.com>
Subject: [PATCH AUTOSEL for 4.14 021/110] sget(): handle failures of
register_shrinker()
From: Al Viro <viro@...iv.linux.org.uk>
[ Upstream commit 9ee332d99e4d5a97548943b81c54668450ce641b ]
Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
---
fs/super.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/fs/super.c b/fs/super.c
index 994db21f59bf..79d7fc5e0ddd 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -522,7 +522,11 @@ retry:
hlist_add_head(&s->s_instances, &type->fs_supers);
spin_unlock(&sb_lock);
get_filesystem(type);
- register_shrinker(&s->s_shrink);
+ err = register_shrinker(&s->s_shrink);
+ if (err) {
+ deactivate_locked_super(s);
+ s = ERR_PTR(err);
+ }
return s;
}
--
2.11.0
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