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fs: remove useless lockdep assertion

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mnt_ns_release() can run asynchronously via call_rcu() so hitting that
lockdep assertion means someone else already grabbed the
mnt_ns_tree_lock and causes a false positive. That assertion has likely
always been wrong. call_rcu() just makes it more likely to hit.

Link: https://lore.kernel.org/r/Z2PlT5rcRTIhCpft@ly-workstation
Link: https://lore.kernel.org/r/20241219-darben-quietschen-b6e1d80327bb@brauner
Reported-by: Lai, Yi <yi1.lai@linux.intel.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Christian Brauner
2024-12-19 14:59:14 +01:00
parent 7f9bfafc5f
commit 22eb23b8a7
1 changed files with 0 additions and 2 deletions
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2
fs/namespace.c
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@@ -160,8 +160,6 @@ static void mnt_ns_tree_add(struct mnt_namespace *ns)
static void mnt_ns_release(struct mnt_namespace *ns)
{
lockdep_assert_not_held(&mnt_ns_tree_lock.lock);
/* keep alive for {list,stat}mount() */
if (refcount_dec_and_test(&ns->passive)) {
put_user_ns(ns->user_ns);