Commit-ID: bca237a52ca0035b0a0380003283d8bf590188d5
Gitweb: https://git.kernel.org/tip/bca237a52ca0035b0a0380003283d8bf590188d5
Author: Kees Cook <keescook@xxxxxxxxxxxx>
AuthorDate: Mon, 28 Aug 2017 15:03:41 -0700
Committer: Kees Cook <keescook@xxxxxxxxxxxx>
CommitDate: Tue, 21 Nov 2017 15:46:44 -0800
block/laptop_mode: Convert timers to use timer_setup()
In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.
Cc: Jens Axboe <axboe@xxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Jan Kara <jack@xxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Nicholas Piggin <npiggin@xxxxxxxxx>
Cc: Vladimir Davydov <vdavydov.dev@xxxxxxxxx>
Cc: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx>
Cc: Jeff Layton <jlayton@xxxxxxxxxx>
Cc: linux-block@xxxxxxxxxxxxxxx
Cc: linux-mm@xxxxxxxxx
Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
---
block/blk-core.c | 10 +++++-----
include/linux/writeback.h | 2 +-
mm/page-writeback.c | 7 ++++---
3 files changed, 10 insertions(+), 9 deletions(-)
diff --git a/block/blk-core.c b/block/blk-core.c
index 1038706..b888175 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -863,9 +863,9 @@ static void blk_queue_usage_counter_release(struct percpu_ref *ref)
wake_up_all(&q->mq_freeze_wq);
}
-static void blk_rq_timed_out_timer(unsigned long data)
+static void blk_rq_timed_out_timer(struct timer_list *t)
{
- struct request_queue *q = (struct request_queue *)data;
+ struct request_queue *q = from_timer(q, t, timeout);
kblockd_schedule_work(&q->timeout_work);
}
@@ -901,9 +901,9 @@ struct request_queue *blk_alloc_queue_node(gfp_t gfp_mask, int node_id)
q->backing_dev_info->name = "block";
q->node = node_id;
- setup_timer(&q->backing_dev_info->laptop_mode_wb_timer,
- laptop_mode_timer_fn, (unsigned long) q);
- setup_timer(&q->timeout, blk_rq_timed_out_timer, (unsigned long) q);
+ timer_setup(&q->backing_dev_info->laptop_mode_wb_timer,
+ laptop_mode_timer_fn, 0);
+ timer_setup(&q->timeout, blk_rq_timed_out_timer, 0);
INIT_WORK(&q->timeout_work, NULL);
INIT_LIST_HEAD(&q->queue_head);
INIT_LIST_HEAD(&q->timeout_list);
diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index f42d856..fdfd04e 100644
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -308,7 +308,7 @@ static inline void cgroup_writeback_umount(void)
void laptop_io_completion(struct backing_dev_info *info);
void laptop_sync_completion(void);
void laptop_mode_sync(struct work_struct *work);
-void laptop_mode_timer_fn(unsigned long data);
+void laptop_mode_timer_fn(struct timer_list *t);
#else
static inline void laptop_sync_completion(void) { }
#endif
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 8a15511..e709503 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -1993,11 +1993,12 @@ int dirty_writeback_centisecs_handler(struct ctl_table *table, int write,
}
#ifdef CONFIG_BLOCK
-void laptop_mode_timer_fn(unsigned long data)
+void laptop_mode_timer_fn(struct timer_list *t)
{
- struct request_queue *q = (struct request_queue *)data;
+ struct backing_dev_info *backing_dev_info =
+ from_timer(backing_dev_info, t, laptop_mode_wb_timer);
- wakeup_flusher_threads_bdi(q->backing_dev_info, WB_REASON_LAPTOP_TIMER);
+ wakeup_flusher_threads_bdi(backing_dev_info, WB_REASON_LAPTOP_TIMER);
}
/*
--
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