diff options
| author | Christoph Hellwig <hch@lst.de> | 2021-08-09 16:17:40 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-08-09 11:52:28 -0600 |
| commit | 5ed964f8e54eb3191b8b7b45aeb52672a0c995dc (patch) | |
| tree | 0f1db60cbff08e5fe920f13b06aca55c3a8de162 | |
| parent | d1254a8749711e0d7441036a74ce592341f89697 (diff) | |
mm: hide laptop_mode_wb_timer entirely behind the BDI API
Don't leak the detaŃ–ls of the timer into the block layer, instead
initialize the timer in bdi_alloc and delete it in bdi_unregister.
Note that this means the timer is initialized (but not armed) for
non-block queues as well now.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20210809141744.1203023-2-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | block/blk-core.c | 5 | ||||
| -rw-r--r-- | mm/backing-dev.c | 3 | ||||
| -rw-r--r-- | mm/page-writeback.c | 2 |
3 files changed, 3 insertions, 7 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 04477697ee4b..5897bc37467d 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -394,10 +394,7 @@ void blk_cleanup_queue(struct request_queue *q) /* for synchronous bio-based driver finish in-flight integrity i/o */ blk_flush_integrity(); - /* @q won't process any more request, flush async actions */ - del_timer_sync(&q->backing_dev_info->laptop_mode_wb_timer); blk_sync_queue(q); - if (queue_is_mq(q)) blk_mq_exit_queue(q); @@ -546,8 +543,6 @@ struct request_queue *blk_alloc_queue(int node_id) atomic_set(&q->nr_active_requests_shared_sbitmap, 0); - 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, blk_timeout_work); INIT_LIST_HEAD(&q->icq_list); diff --git a/mm/backing-dev.c b/mm/backing-dev.c index f5561ea7d90a..cd06dca232c3 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -807,6 +807,7 @@ struct backing_dev_info *bdi_alloc(int node_id) bdi->capabilities = BDI_CAP_WRITEBACK | BDI_CAP_WRITEBACK_ACCT; bdi->ra_pages = VM_READAHEAD_PAGES; bdi->io_pages = VM_READAHEAD_PAGES; + timer_setup(&bdi->laptop_mode_wb_timer, laptop_mode_timer_fn, 0); return bdi; } EXPORT_SYMBOL(bdi_alloc); @@ -928,6 +929,8 @@ static void bdi_remove_from_list(struct backing_dev_info *bdi) void bdi_unregister(struct backing_dev_info *bdi) { + del_timer_sync(&bdi->laptop_mode_wb_timer); + /* make sure nobody finds us on the bdi_list anymore */ bdi_remove_from_list(bdi); wb_shutdown(&bdi->wb); diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 9f63548f247c..c12f67cbfa19 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -2010,7 +2010,6 @@ int dirty_writeback_centisecs_handler(struct ctl_table *table, int write, return ret; } -#ifdef CONFIG_BLOCK void laptop_mode_timer_fn(struct timer_list *t) { struct backing_dev_info *backing_dev_info = @@ -2045,7 +2044,6 @@ void laptop_sync_completion(void) rcu_read_unlock(); } -#endif /* * If ratelimit_pages is too high then we can get into dirty-data overload |