Instead of open-coding the locking use a guard.
Signed-off-by: Christian Brauner <brauner@xxxxxxxxxx>
---
fs/namespace.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/namespace.c b/fs/namespace.c
index 5a51315c6678..72c6e884728b 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -5106,7 +5106,8 @@ SYSCALL_DEFINE4(listmount, const struct mnt_id_req __user *, req, u64 __user *,
mnt_parent_id = kreq.mnt_id;
last_mnt_id = kreq.param;
- down_read(&namespace_sem);
+ guard(rwsem_read)(&namespace_sem);
+
get_fs_root(current->fs, &root);
if (mnt_parent_id == LSMT_ROOT) {
orig = root;
@@ -5125,7 +5126,6 @@ SYSCALL_DEFINE4(listmount, const struct mnt_id_req __user *, req, u64 __user *,
ret = do_listmount(first, &orig, mnt_parent_id, mnt_ids, nr_mnt_ids, &root);
err:
path_put(&root);
- up_read(&namespace_sem);
return ret;
}
--
2.43.0
