ext4/super: Rename kfree_rcu() to kfree_rcu_mightsleep()

The kfree_rcu() and kvfree_rcu() macros' single-argument forms are
deprecated.  Therefore switch to the new kfree_rcu_mightsleep() and
kvfree_rcu_mightsleep() variants. The goal is to avoid accidental use
of the single-argument forms, which can introduce functionality bugs in
atomic contexts and latency bugs in non-atomic contexts.

Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Lukas Czerner <lczerner@redhat.com>
Acked-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 88f7b8a88c76b6d5d34d9740d58ffe26136dc5dd..405a66b47311f2ec47e9c4929f2752b733504cc5 100644 (file)
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -2500,7 +2500,7 @@ static void ext4_apply_quota_options(struct fs_context *fc,
                        qname = rcu_replace_pointer(sbi->s_qf_names[i], qname,
                                                lockdep_is_held(&sb->s_umount));
                        if (qname)
-                               kfree_rcu(qname);
+                               kfree_rcu_mightsleep(qname);
                }
        }