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nsproxy: use put_nsproxy() in switch_task_namespaces()

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We already have a dedicated helper that handles reference count
checking so stop open-coding the reference count check in
switch_task_namespaces() and use the dedicated put_nsproxy() helper
instead.
Take the change to fix a whitespace issue too.

Signed-off-by: Hui Su <sh_def@163.com>
[christian.brauner@ubuntu.com: expand commit message]
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Link: https://lore.kernel.org/r/20201115180054.GA371317@rlk
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
This commit is contained in:
Hui Su 2020-11-16 02:00:54 +08:00 committed by Christian Brauner
parent bda4c60d02
commit aabe19b827
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GPG Key ID: 91C61BC06578DCA2
1 changed files with 3 additions and 3 deletions
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6
kernel/nsproxy.c
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@ -173,7 +173,7 @@ int copy_namespaces(unsigned long flags, struct task_struct *tsk)
* it along with CLONE_NEWIPC.
*/
if ((flags & (CLONE_NEWIPC | CLONE_SYSVSEM)) ==
(CLONE_NEWIPC | CLONE_SYSVSEM))
(CLONE_NEWIPC | CLONE_SYSVSEM))
return -EINVAL;
new_ns = create_new_namespaces(flags, tsk, user_ns, tsk->fs);
@ -250,8 +250,8 @@ void switch_task_namespaces(struct task_struct *p, struct nsproxy *new)
p->nsproxy = new;
task_unlock(p);
if (ns && atomic_dec_and_test(&ns->count))
free_nsproxy(ns);
if (ns)
put_nsproxy(ns);
}
void exit_task_namespaces(struct task_struct *p)