From 68cbd415dd4b9c5b9df69f0f091879e56bf5907a Mon Sep 17 00:00:00 2001
From: Frederic Weisbecker <frederic@kernel.org>
Date: Fri, 21 Jun 2024 11:15:58 +0200
Subject: [PATCH] task_work: s/task_work_cancel()/task_work_cancel_func()/
A proper task_work_cancel() API that actually cancels a callback and not
*any* callback pointing to a given function is going to be needed for
perf events event freeing. Do the appropriate rename to prepare for
that.
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20240621091601.18227-2-frederic@kernel.org
---
include/linux/task_work.h | 2 +-
kernel/irq/manage.c | 2 +-
kernel/task_work.c | 10 +++++-----
security/keys/keyctl.c | 2 +-
4 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/include/linux/task_work.h b/include/linux/task_work.h
index 795ef5a684294..23ab01ae185e5 100644
--- a/include/linux/task_work.h
+++ b/include/linux/task_work.h
@@ -30,7 +30,7 @@ int task_work_add(struct task_struct *task, struct callback_head *twork,
struct callback_head *task_work_cancel_match(struct task_struct *task,
bool (*match)(struct callback_head *, void *data), void *data);
-struct callback_head *task_work_cancel(struct task_struct *, task_work_func_t);
+struct callback_head *task_work_cancel_func(struct task_struct *, task_work_func_t);
void task_work_run(void);
static inline void exit_task_work(struct task_struct *task)
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 71b0fc2d0aeaa..dd53298ef1a5c 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -1337,7 +1337,7 @@ static int irq_thread(void *data)
* synchronize_hardirq(). So neither IRQTF_RUNTHREAD nor the
* oneshot mask bit can be set.
*/
- task_work_cancel(current, irq_thread_dtor);
+ task_work_cancel_func(current, irq_thread_dtor);
return 0;
}
diff --git a/kernel/task_work.c b/kernel/task_work.c
index 95a7e1b7f1dab..54ac24059daaf 100644
--- a/kernel/task_work.c
+++ b/kernel/task_work.c
@@ -120,9 +120,9 @@ static bool task_work_func_match(struct callback_head *cb, void *data)
}
/**
- * task_work_cancel - cancel a pending work added by task_work_add()
- * @task: the task which should execute the work
- * @func: identifies the work to remove
+ * task_work_cancel_func - cancel a pending work matching a function added by task_work_add()
+ * @task: the task which should execute the func's work
+ * @func: identifies the func to match with a work to remove
*
* Find the last queued pending work with ->func == @func and remove
* it from queue.
@@ -131,7 +131,7 @@ static bool task_work_func_match(struct callback_head *cb, void *data)
* The found work or NULL if not found.
*/
struct callback_head *
-task_work_cancel(struct task_struct *task, task_work_func_t func)
+task_work_cancel_func(struct task_struct *task, task_work_func_t func)
{
return task_work_cancel_match(task, task_work_func_match, func);
}
@@ -168,7 +168,7 @@ void task_work_run(void)
if (!work)
break;
/*
- * Synchronize with task_work_cancel(). It can not remove
+ * Synchronize with task_work_cancel_match(). It can not remove
* the first entry == work, cmpxchg(task_works) must fail.
* But it can remove another entry from the ->next list.
*/
diff --git a/security/keys/keyctl.c b/security/keys/keyctl.c
index 4bc3e9398ee3d..ab927a142f515 100644
--- a/security/keys/keyctl.c
+++ b/security/keys/keyctl.c
@@ -1694,7 +1694,7 @@ long keyctl_session_to_parent(void)
goto unlock;
/* cancel an already pending keyring replacement */
- oldwork = task_work_cancel(parent, key_change_session_keyring);
+ oldwork = task_work_cancel_func(parent, key_change_session_keyring);
/* the replacement session keyring is applied just prior to userspace
* restarting */
--
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